{"id":1757,"date":"2019-12-10T14:33:29","date_gmt":"2019-12-10T05:33:29","guid":{"rendered":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/?page_id=1757"},"modified":"2025-12-09T11:05:21","modified_gmt":"2025-12-09T02:05:21","slug":"%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e","status":"publish","type":"page","link":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/","title":{"rendered":"\u8a08\u7b97\u6570\u5b66\u6f14\u7fd2\u7b2c\uff13\u56de"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u30b3\u30f3\u30c6\u30f3\u30c4<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69ec4134a4dbb\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69ec4134a4dbb\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e6%9d%a1%e4%bb%b6%e5%88%86%e5%b2%90%ef%bc%88if%e6%96%87%ef%bc%89\" >\u6761\u4ef6\u5206\u5c90\uff08if\u6587\uff09<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e5%89%8d%e5%9b%9e%e3%81%ae%e3%81%be%e3%81%a8%e3%82%81\" >\u524d\u56de\u306e\u307e\u3068\u3081<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e4%bb%8a%e6%97%a5%e3%81%ae%e7%9b%ae%e6%a8%99\" >\u4eca\u65e5\u306e\u76ee\u6a19<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e6%9d%a1%e4%bb%b6%e5%88%86%e5%b2%90%ef%bc%88if_%e6%96%87_if-else_%e6%96%87%ef%bc%89\" >\u6761\u4ef6\u5206\u5c90\uff08if \u6587, if-else \u6587\uff09<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e3%83%96%e3%83%ad%e3%83%83%e3%82%af%e6%96%87\" >\u30d6\u30ed\u30c3\u30af\u6587<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#if_%e6%96%87_if-else_%e6%96%87\" >if \u6587, if-else \u6587<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e5%85%b8%e5%9e%8b%e7%9a%84%e3%81%aa_if-else_%e6%96%87\" >\u5178\u578b\u7684\u306a if-else \u6587<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e3%83%95%e3%83%ad%e3%83%bc%e3%83%81%e3%83%a3%e3%83%bc%e3%83%88%e3%81%ab%e3%82%88%e3%82%8b%e8%aa%ac%e6%98%8e\" >\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306b\u3088\u308b\u8aac\u660e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e6%9d%a1%e4%bb%b6%e5%bc%8f\" >\u6761\u4ef6\u5f0f<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e8%aa%b2%e9%a1%8c%ef%bc%91\" >\u8ab2\u984c\uff11<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e8%aa%b2%e9%a1%8c%ef%bc%92\" >\u8ab2\u984c\uff12<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e8%aa%b2%e9%a1%8c%ef%bc%93\" >\u8ab2\u984c\uff13<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e8%aa%b2%e9%a1%8c%ef%bc%94\" >\u8ab2\u984c\uff14<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e8%ab%96%e7%90%86%e6%bc%94%e7%ae%97%e5%ad%90%e3%82%92%e3%81%a4%e3%81%8b%e3%81%a3%e3%81%9f%e8%be%bc%e3%81%bf%e5%85%a5%e3%81%a3%e3%81%9f%e6%9d%a1%e4%bb%b6%e5%bc%8f\" >\u8ad6\u7406\u6f14\u7b97\u5b50\u3092\u3064\u304b\u3063\u305f\u8fbc\u307f\u5165\u3063\u305f\u6761\u4ef6\u5f0f<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e8%aa%b2%e9%a1%8c%ef%bc%95\" >\u8ab2\u984c\uff15<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e8%aa%b2%e9%a1%8c%ef%bc%96\" >\u8ab2\u984c\uff16<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e7%99%ba%e5%b1%95%e8%aa%b2%e9%a1%8c\" >\u767a\u5c55\u8ab2\u984c<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/#%e4%bb%8a%e6%97%a5%e6%96%b0%e3%81%97%e3%81%8f%e5%ad%a6%e3%82%93%e3%81%a0%e4%ba%8b\" >\u4eca\u65e5\u65b0\u3057\u304f\u5b66\u3093\u3060\u4e8b<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%e6%9d%a1%e4%bb%b6%e5%88%86%e5%b2%90%ef%bc%88if%e6%96%87%ef%bc%89\"><\/span>\u6761\u4ef6\u5206\u5c90\uff08if\u6587\uff09<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2><span class=\"ez-toc-section\" id=\"%e5%89%8d%e5%9b%9e%e3%81%ae%e3%81%be%e3%81%a8%e3%82%81\"><\/span>\u524d\u56de\u306e\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\u5909\u6570\u306f\u5fc5\u305a\u5ba3\u8a00\u3057\u3066\u304b\u3089\u7528\u3044\u308b\u3002(int n, double x\u3001\u306a\u3069\uff09<\/li>\n<li>\u5909\u6570\u306e\u4ee3\u5165\u306b\u306f = \u3092\u7528\u3044\u308b\u3002( = \u306e\u53f3\u5074\u306e\u5f0f\u306e\u5024\u304c\u3001\u5de6\u5074\u306e\u5909\u6570\u306b\u4ee3\u5165\u3055\u308c\u308b\uff09<\/li>\n<li>\u5909\u6570\u306e\u8868\u793a\u306e\u4ed5\u65b9\u306f\u6574\u6570\u578b\u3068\u5b9f\u6570\uff08\u6d6e\u52d5\u5c0f\u6570\u70b9\uff09\u578b\u3067\u9055\u3046\u3002<br \/>\nprintf(&#8220;%d&#8221;,n)\u3001printf(&#8220;%lf&#8221;,x)<\/li>\n<li>\u5909\u6570\u306e\u5165\u529b\u306e\u4ed5\u65b9\u3082\u6574\u6570\u578b\u3068\u5b9f\u6570\u578b\u3067\u9055\u3046\u3002<br \/>\nscanf(&#8220;%d&#8221;, <span style=\"color: #ff0000;\">&amp;<\/span>n), scanf(&#8220;%lf&#8221;, <span style=\"color: #ff0000;\">&amp;<\/span>a)<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%e4%bb%8a%e6%97%a5%e3%81%ae%e7%9b%ae%e6%a8%99\"><\/span>\u4eca\u65e5\u306e\u76ee\u6a19<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\u524d\u56de\u307e\u3067\u3067\u5b66\u3093\u3060printf\u95a2\u6570\u3068scanf\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u3057\u3063\u304b\u308a\u8eab\u306b\u4ed8\u3051\u308b<\/li>\n<li>\u6761\u4ef6\u5206\u5c90\u3092\u7406\u89e3\u3059\u308b<\/li>\n<li>C\u8a00\u8a9e\u306b\u304a\u3051\u308b\u6761\u4ef6\u5206\u5c90\u306e\u66f8\u5f0f\u3092\u899a\u3048\u308b<\/li>\n<li>\u6761\u4ef6\u5f0f\u306e\u66f8\u5f0f\u3092\u7406\u89e3\u3059\u308b<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%e6%9d%a1%e4%bb%b6%e5%88%86%e5%b2%90%ef%bc%88if_%e6%96%87_if-else_%e6%96%87%ef%bc%89\"><\/span>\u6761\u4ef6\u5206\u5c90\uff08if \u6587, if-else \u6587\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%e3%83%96%e3%83%ad%e3%83%83%e3%82%af%e6%96%87\"><\/span>\u30d6\u30ed\u30c3\u30af\u6587<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4eca\u65e5\u3067\u3066\u304f\u308b if \u6587\u3084 for, while \u6587\u3067\u306f<span style=\"color: #0000ff;\"><strong>\u30d6\u30ed\u30c3\u30af\u6587<\/strong><\/span>\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<br \/>\n\u30d6\u30ed\u30c3\u30af\u6587\u3068\u306f\u3001\u6587\u3092\u4e00\u307e\u3068\u3081\u306b\u3057\u305f\u3082\u306e\u3067\u3001{\u3000 } \u3067\u56f2\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"if_%e6%96%87_if-else_%e6%96%87\"><\/span>if \u6587, if-else \u6587<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u3066\u3044\u308b\u3068\u3001\u6761\u4ef6\u306b\u3088\u3063\u3066\u51e6\u7406\u3092\u5206\u5c90\u3055\u305b\u305f\u3044\u5834\u5408\u304c\u3088\u304f\u51fa\u3066\u304d\u307e\u3059\u3002<br \/>\n\uff08\u4e0b\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u3001\u30d5\u30a1\u30a4\u30eb\u540d\u3092if-1.c \u3068\u3057\u3066\u30a8\u30c7\u30a3\u30bf\u30fc\u3067\u6253\u3061\u8fbc\u3093\u3067\u304f\u3060\u3055\u3044\u3002\uff09<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>if-1.c<\/strong><\/span><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-title=\"if-1.c\" data-enlighter-language=\"c\">#include &lt;stdio.h&gt;\r\n \r\nint main() {\r\n    \/* \u5b9f\u6570\u578b\u306e\u5909\u6570 a, b, c \u3092\u7528\u610f\u3059\u308b *\/\r\n    double  a, b, c;\r\n    \r\n    \/* \u5b9f\u6570\u578b\u5909\u6570 a \u306b\u5165\u529b *\/\r\n    printf(\"\u5b9f\u6570 a \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a\");\r\n    scanf(\"%lf\", &amp;a);\r\n    \r\n    \/* \u5b9f\u6570\u578b\u5909\u6570 b \u306b\u5165\u529b *\/\r\n    printf(\"\u5b9f\u6570 b \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a\");\r\n    scanf(\"%lf\", &amp;b);\r\n    \r\n    \/* \u5b9f\u6570\u578b\u5909\u6570 c \u306b a\/b \u306e\u7d50\u679c\u3092\u4ee3\u5165 *\/\r\n    c = a\/b;\r\n    \r\n    \/* \u5909\u6570 c \u306e\u5185\u5bb9\u3092\u753b\u9762\u306b\u8868\u793a *\/\r\n    printf(\"a\/b=%lf\\n\", c);\r\n    \r\n    return 0;\r\n}<\/pre>\n<p>\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3057\u3001\u5b9f\u6570 a,b \u3092\u305d\u308c\u305e\u308c\u5165\u529b\u3059\u308b\u3068\u3001a\/b \u306e\u7d50\u679c\u3092\u753b\u9762\u306b\u51fa\u529b\u3057\u307e\u3059\u3002<br \/>\n\u3068\u3053\u308d\u3067\u3001 b \u3068\u3057\u3066 0 \u3092\u5165\u529b\u3059\u308b\u3068\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f\u3084\u3063\u3066\u307f\u308b\u3068\u5206\u304b\u308a\u307e\u3059\u304c\u3001\u306a\u306b\u304b\u30a8\u30e9\u30fc\u304c\u51fa\u307e\u3059\u3002<br \/>\n<span style=\"color: #ff0000;\"><strong>\u3053\u306e\u3088\u3046\u306b\u3001\u5b9f\u6570\u578b\u306b\u9650\u3089\u305a 0 \u3067\u5272\u308d\u3046\u3068\u3059\u308b\u3068\u5b9f\u884c\u6642\u306b\u30a8\u30e9\u30fc\u306b\u306a\u308b\uff08\u30b3\u30f3\u30d1\u30a4\u30eb\u306f\u6210\u529f\u3059\u308b\uff09<\/strong><\/span>\u306e\u3067\u3001\u305d\u308c\u3092\u56de\u907f\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u306d\u3070\u306a\u308a\u307e\u305b\u3093\u3002<br \/>\n\u305d\u3053\u3067\u3001<span style=\"color: #0000ff;\"><strong>\u6761\u4ef6\u6587<\/strong><\/span>\u304c\u767b\u5834\u3057\u307e\u3059\u3002<br \/>\n\u307e\u305a\u306f\u3001\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u307f\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br \/>\n\u5148\u306e if-1.c \u3092\u6b21\u306e\u3088\u3046\u306b\u5909\u66f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<br \/>\n&#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211;<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>if-1a.c<\/strong><\/span><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">#include &lt;stdio.h&gt;\r\n \r\nint main() {\r\n    \/* \u5b9f\u6570\u578b\u306e\u5909\u6570 a, b, c \u3092\u7528\u610f\u3059\u308b *\/\r\n    double  a, b, c;\r\n    \r\n    \/* \u5b9f\u6570\u578b\u5909\u6570 a \u306b\u5165\u529b *\/\r\n    printf(\"\u5b9f\u6570 a \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a\");\r\n    scanf(\"%lf\", &amp;a);\r\n    \r\n    \/* \u5b9f\u6570\u578b\u5909\u6570 b \u306b\u5165\u529b *\/\r\n    printf(\"\u5b9f\u6570 b \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a\");\r\n    scanf(\"%lf\", &amp;b);\r\n    \r\n    if (b == 0.0) {\r\n        printf(\"0 \u3067\u306e\u5272\u308a\u7b97\u306f\u3067\u304d\u307e\u305b\u3093\u3002\\n\");\r\n    }\r\n    else {\r\n        \/* \u5b9f\u6570\u578b\u5909\u6570 c \u306b a\/b \u306e\u7d50\u679c\u3092\u4ee3\u5165 *\/\r\n        c = a\/b;\r\n        \r\n        \/* \u5909\u6570 c \u306e\u5185\u5bb9\u3092\u753b\u9762\u306b\u8868\u793a *\/\r\n        printf(\"a\/b=%lf\\n\", c);\r\n    }\r\n    \r\n    return 0;\r\n}\r\n<\/pre>\n<p>if (b == 0.0) \u304b\u3089\u304c\u6761\u4ef6\u6587\u3067\u3059\u3002<br \/>\n\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001\u5165\u529b\u3055\u308c\u305f b \u306e\u5024\u304c 0 \u306b\u7b49\u3057\u3051\u308c\u3070\uff11\uff16\u884c\u76ee\u304c\u5b9f\u884c\u3055\u308c\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\uff11\uff19\u301c\uff12\uff13\u884c\u76ee\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%e5%85%b8%e5%9e%8b%e7%9a%84%e3%81%aa_if-else_%e6%96%87\"><\/span>\u5178\u578b\u7684\u306a if-else \u6587<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>if-else \u6587\u306b\u306f\u91cd\u8981\u306a\u3082\u306e\u3068\u3057\u3066\u6b21\u306e\u3088\u3046\u306a\uff13\u3064\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n<strong><u>\u30d1\u30bf\u30fc\u30f3\uff11<\/u><\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">\u6587\uff10\r\nif (\u6761\u4ef6) {\r\n    \u6761\u4ef6\u304c\u771f\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587\uff11\r\n}\r\nelse {\r\n    \u6761\u4ef6\u304c\u507d\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587\uff12\r\n}\r\n\u6587\uff13<\/pre>\n<p><strong><u>\u30d1\u30bf\u30fc\u30f3\uff12<\/u><\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">\u6587\uff10\r\nif (\u6761\u4ef6) {\r\n    \u6761\u4ef6\u304c\u771f\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587\uff11\r\n}\r\n\u6587\uff12<\/pre>\n<p>\u30d1\u30bf\u30fc\u30f3\uff11\u3068\u30d1\u30bf\u30fc\u30f3\uff12\u306e\u9055\u3044\u306f else \u6587\u304c\u6709\u308b\u304b\u7121\u3044\u304b\u306e\u9055\u3044\u3067\u3059\u3002<br \/>\n\u3088\u308a\u8907\u96d1\u306a\u3082\u306e\u3068\u3057\u3066\u3001\u6b21\u306e\u30d1\u30bf\u30fc\u30f3\uff13 (3N) \u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n<strong><u>\u30d1\u30bf\u30fc\u30f3\uff13<\/u><\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">\u6587\uff10\r\nif (\u6761\u4ef6\uff11) {\r\n    \u6761\u4ef6\u304c\u771f\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587\uff11\r\n}\r\nelse if (\u6761\u4ef6\uff12) {\r\n    \u6761\u4ef6\uff11\u304c\u507d\u304b\u3064\u6761\u4ef6\uff12\u304c\u771f\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587\uff12\r\n}\r\nelse {\r\n    \u6761\u4ef6\uff11,2 \u3069\u3061\u3089\u3082\u507d\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587\uff13\r\n}\r\n\u6587\uff14\r\n<\/pre>\n<p><strong><u>\u30d1\u30bf\u30fc\u30f3\uff13N<\/u><\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">\u6587\uff10\r\nif (\u6761\u4ef6\uff11) {\r\n    \u6761\u4ef6\u304c\u771f\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587\uff11\r\n}\r\nelse if (\u6761\u4ef6\uff12) {\r\n    \u6761\u4ef6\uff11\u304c\u507d\u304b\u3064\u6761\u4ef6\uff12\u304c\u771f\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587\uff12\r\n}\r\n\u30fb\r\n\u30fb\r\n\u30fb\r\nelse if (\u6761\u4ef6N) {\r\n    \u6761\u4ef6\uff11\uff5e\u6761\u4ef6N-1\u304c\u5168\u3066\u507d\u304b\u3064\u6761\u4ef6N\u304c\u771f\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587N\r\n}\r\nelse {\r\n    \u6761\u4ef6\uff11\uff5e\u6761\u4ef6N\u304c\u5168\u3066\u507d\u3067\u3042\u308c\u3070\u5b9f\u884c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6587\u30fb\u30fb\u30fb\u30fb\u30d6\u30ed\u30c3\u30af\u6587N+1\r\n}\r\n\u6587N+2<\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%e3%83%95%e3%83%ad%e3%83%bc%e3%83%81%e3%83%a3%e3%83%bc%e3%83%88%e3%81%ab%e3%82%88%e3%82%8b%e8%aa%ac%e6%98%8e\"><\/span>\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306b\u3088\u308b\u8aac\u660e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e0a\u8a18\u30d1\u30bf\u30fc\u30f3\uff11\u3068\u30d1\u30bf\u30fc\u30f3\uff12\u3092\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u3067\u793a\u3059\u3068\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-615\" src=\"http:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wordpress\/wp-content\/uploads\/2020\/01\/3image001.png\" alt=\"\" width=\"498\" height=\"321\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%e6%9d%a1%e4%bb%b6%e5%bc%8f\"><\/span>\u6761\u4ef6\u5f0f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>if \u6587\u306e\u6761\u4ef6\u306e\u90e8\u5206\u306b\u306f<span style=\"color: #0000ff;\"><strong>\u6761\u4ef6\u5f0f<\/strong><\/span>\u304c\u5165\u308a\u307e\u3059\u3002\u6761\u4ef6\u5f0f\u306f<span style=\"color: #0000ff;\"><strong>\u95a2\u4fc2\u6f14\u7b97\u5b50<\/strong><\/span>\u3068\u3044\u3046\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u3066\u8a18\u8ff0\u3057\u307e\u3059\u3002<br \/>\n\u95a2\u4fc2\u6f14\u7b97\u5b50\u306f\uff12\u3064\u306e\u5024\u306e\u5927\u5c0f\u95a2\u4fc2\u3084\u7b49\u5024\u95a2\u4fc2\u3092\u5224\u5b9a\u3059\u308b\u3082\u306e\u3067\u3059\u3002<br \/>\n\u95a2\u4fc2\u6f14\u7b97\u5b50\u306b\u306f\u6b21\u306e\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<table class=\" aligncenter\" style=\"width: 100%;\" width=\"100%\">\n<tbody>\n<tr>\n<td width=\"25%\">\u6f14\u7b97\u5b50<\/td>\n<td width=\"25%\">\u8aac\u660e<\/td>\n<td width=\"25%\">\u8a18\u8ff0\u4f8b<\/td>\n<td width=\"25%\">\u8a18\u8ff0\u306e\u610f\u5473<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">&gt;<\/td>\n<td width=\"25%\">\u5927\u304d\u3044<\/td>\n<td width=\"25%\">if (a &gt; 100)<\/td>\n<td width=\"25%\">a \u304c 100\u3088\u308a\u5927\u306a\u3089<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">&gt;=<\/td>\n<td width=\"25%\">\u5927\u304d\u3044\u304b\u7b49\u3057\u3044<\/td>\n<td width=\"25%\">if (a &gt;= 100)<\/td>\n<td width=\"25%\">a \u304c 100\u4ee5\u4e0a\u306a\u3089<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">&lt;<\/td>\n<td width=\"25%\">\u5c0f\u3055\u3044<\/td>\n<td width=\"25%\">if (a &lt; 100)<\/td>\n<td width=\"25%\">a \u304c 100\u3088\u308a\u5c0f\u306a\u3089<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">&lt;=<\/td>\n<td width=\"25%\">\u5c0f\u3055\u3044\u304b\u7b49\u3057\u3044<\/td>\n<td width=\"25%\">if (a &lt;= 100)<\/td>\n<td width=\"25%\">a \u304c 100\u4ee5\u4e0b\u306a\u3089<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">==<\/td>\n<td width=\"25%\">\u7b49\u3057\u3044<\/td>\n<td width=\"25%\">if (a == 100)<\/td>\n<td width=\"25%\">a \u304c 100\u306a\u3089<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">!=<\/td>\n<td width=\"25%\">\u7b49\u3057\u304f\u306a\u3044<\/td>\n<td width=\"25%\">if (a != 100)<\/td>\n<td width=\"25%\">a \u304c 100\u3067\u306a\u3044\u306a\u3089<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color: #ff0000;\"><strong>\u7b49\u3057\u3044\u3092\u3042\u3089\u308f\u3059\u6761\u4ef6\u5f0f\u306f == \u3068\u30a4\u30b3\u30fc\u30eb\uff12\u3064\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<br \/>\n= \u3068\u30a4\u30b3\u30fc\u30eb\uff11\u3064\u306e\u5834\u5408\u306f\u5909\u6570\u3078\u306e\u4ee3\u5165\u3092\u3042\u3089\u308f\u3057\u3066\u3044\u307e\u3057\u305f\uff08\u5148\u9031\u306e\u5185\u5bb9\uff09\u3002<br \/>\nif \u6587\u306e\u6761\u4ef6\u3092\u66f8\u304f\u90e8\u5206\u306b\u8aa4\u3063\u3066\u4ee3\u5165\u5f0f\u3092\u66f8\u3044\u305f\u3068\u3057\u3066\u3082\u3001\u6587\u6cd5\u7684\u306b\u306f\u9593\u9055\u3063\u3066\u3044\u306a\u3044\u306e\u3067\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u6210\u529f\u3057\u3066\u3057\u307e\u3044\u307e\u3059\uff08\u671f\u5f85\u3057\u305f\u52d5\u4f5c\u306f\u3057\u307e\u305b\u3093\u304c\uff09\u3002<br \/>\n\u6c17\u3092\u3064\u3051\u3066\u304f\u3060\u3055\u3044\u3002<\/strong><\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"%e8%aa%b2%e9%a1%8c%ef%bc%91\"><\/span><u>\u8ab2\u984c\uff11<\/u><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\uff12\u3064\u306e\u5b9f\u6570 s, t \u3092\u5165\u529b\u3059\u308b\u3068\u3001\u305d\u306e\u5dee\u306e\u7d76\u5bfe\u5024\u3092\u8868\u793a\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u305b\u3088\u3000(<span style=\"text-decoration: underline;\"><strong>if \u6587\u3092\u4f7f\u3046\u3053\u3068<\/strong><\/span>)\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%e8%aa%b2%e9%a1%8c%ef%bc%92\"><\/span><u>\u8ab2\u984c\uff12<\/u><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u6574\u6570 m \u304c\u5165\u529b\u3055\u308c\u308b\u3068\u3001\u305d\u308c\u304c\u5947\u6570\u304b\u5076\u6570\u304b\u3092\u5224\u5b9a\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u305b\u3088\u3002<br \/>\n\uff08\u6ce8\uff1a\u5270\u4f59\u3092\u6c42\u3081\u308b\u6f14\u7b97\u5b50 % \u3092\u5229\u7528. \u3053\u308c\u306f\u6574\u6570\u578b\u5909\u6570m, n \u306b\u5bfe\u3057\u3001m%n \u306f m \u3092 n \u3067\u5272\u3063\u305f\u3068\u304d\u306e\u4f59\u308a\u3092\u4e0e\u3048\u308b\u3002\u3053\u306e\u6f14\u7b97\u5b50\u306f\u6574\u6570\u578b\u5909\u6570\u306b\u306e\u307f\u5229\u7528\u53ef\u80fd\u3002\uff09<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%e8%aa%b2%e9%a1%8c%ef%bc%93\"><\/span><u>\u8ab2\u984c\uff13<\/u><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\uff12\u3064\u306e\u5b9f\u6570 s, t \u3092\u5165\u529b\u3059\u308b\u3068, s \uff1e t, s = t, s \uff1c t \u304b\u5224\u5b9a\u3057\u3066\u8868\u793a\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u305b\u3088\u3002\uff08If-else\u6587\u306e\u30d1\u30bf\u30fc\u30f3\uff13\u3092\u53c2\u8003\uff09<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%e8%aa%b2%e9%a1%8c%ef%bc%94\"><\/span><u>\u8ab2\u984c\uff14<\/u><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\uff13\u3064\u306e\u5b9f\u6570, a, b, c \u3092\u5165\u529b\u3059\u308b\u3068, x \u306b\u95a2\u3059\u308b\uff12\u6b21\u65b9\u7a0b\u5f0f, ax<sup>2<\/sup> + bx + c = 0 \u304c\u5b9f\u6570\u89e3\u3092\u6301\u3064\u304b\u5224\u5b9a\u3057, \u8868\u793a\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u305b\u3088\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%e8%ab%96%e7%90%86%e6%bc%94%e7%ae%97%e5%ad%90%e3%82%92%e3%81%a4%e3%81%8b%e3%81%a3%e3%81%9f%e8%be%bc%e3%81%bf%e5%85%a5%e3%81%a3%e3%81%9f%e6%9d%a1%e4%bb%b6%e5%bc%8f\"><\/span>\u8ad6\u7406\u6f14\u7b97\u5b50\u3092\u3064\u304b\u3063\u305f\u8fbc\u307f\u5165\u3063\u305f\u6761\u4ef6\u5f0f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u3068\u304d\u306b\u306f\u3001<br \/>\n<strong>\u300ca&gt;10\u300d\u3000\u304b\u3064 \u300ca&lt;100\u300d\u3000\u306a\u3089<br \/>\n\u300ca==100\u300d \u307e\u305f\u306f \u300ca==200\u300d \u306a\u3089<\/strong><br \/>\n\u3068\u3044\u3063\u305f\u3001\u5834\u5408\u3092\u6271\u3044\u305f\u3044\u3068\u304d\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u3053\u306e\u3088\u3046\u306a<strong>\u300c<span style=\"color: #0000ff;\">\u304b\u3064<\/span>\u300d<\/strong>\u3084<strong>\u300c<span style=\"color: #0000ff;\">\u307e\u305f\u306f<\/span>\u300d<\/strong>\u306b\u76f8\u5f53\u3059\u308b<span style=\"color: #0000ff;\"><strong>\u8ad6\u7406\u6f14\u7b97\u5b50<\/strong><\/span>\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u3088\u308a\u8907\u96d1\u306a\u6761\u4ef6\u3092\u3042\u3089\u308f\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n\u4f8b\u3048\u3070\u3001\u3046\u308b\u3046\u5e74\u306f<br \/>\n\u300c<span style=\"color: #ff0000;\">\uff14\u3067\u5272\u308a\u5207\u308c\u308b\u3000\u304b\u3064\u3000\uff11\uff10\uff10\u3067\u5272\u308a\u5207\u308c\u306a\u3044<\/span>\u5e74\u300d<br \/>\n\u300c<span style=\"color: #0000ff;\">\uff14\uff10\uff10\u3067\u5272\u308a\u5207\u308c\u308b\u5e74<\/span>\u300d<br \/>\n\u306e\u3069\u3061\u3089\u304b\u306b\u5f53\u3066\u306f\u307e\u308b\u5e74\u306e\u3053\u3068\u3067\u3059\u3002<br \/>\n\u4f8b\u3048\u3070\u3001\u5165\u529b\u3055\u308c\u305f\u5e74\uff08\u897f\u66a6\uff09\u3092\u4e0a\u306e\u6761\u4ef6\u306b\u7167\u3089\u3057\u5408\u308f\u305b\u3001\u3046\u308b\u3046\u5e74\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\nif \u6587\u306e\u4e2d\u8eab\u306b\u6ce8\u610f\u3057\u3064\u3064, \u30d5\u30a1\u30a4\u30eb\u540d\u3092 if-2.c \u3068\u3057\u3066\u6253\u3061\u8fbc\u3093\u3067, \u5b9f\u884c\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044.<br \/>\n\u9014\u4e2d\u3067\u3066\u304f\u308b % \u306f\u5270\u4f59\u3092\u4e0e\u3048\u308b\u3082\u306e\u3067\u3057\u305f\uff08\u4e0a\u8ff0\uff09\u3002<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>if-2.c<\/strong><\/span><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">#include &lt;stdio.h&gt;\r\n \r\nint main() {\r\n    int n;\r\n    \r\n    printf(\"\u5e74=\");\r\n    scanf(\"%d\", &amp;n);\r\n    \r\n    if ((n%4 == 0) &amp;&amp; (n%100 != 0)) {\r\n        printf(\"\u3046\u308b\u3046\u5e74\u3067\u3059\\n\");\r\n    }\r\n    if (n%400 == 0) {\r\n        printf(\"\u3046\u308b\u3046\u5e74\u3067\u3059\\n\");\r\n    }\r\n    \r\n    return 0;\r\n}<\/pre>\n<p>\u9014\u4e2d\u3067\u3066\u304f\u308b &amp;&amp; \u304c\u95a2\u4fc2\u6f14\u7b97\u5b50\u3067\u3001\u300c\u304b\u3064\u300d\u3092\u3042\u3089\u308f\u3057\u307e\u3059\u3002<br \/>\n\u95a2\u4fc2\u6f14\u7b97\u5b50\u306b\u306f &amp;&amp; \u306e\u307b\u304b\u306b\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td width=\"25%\">\u6f14\u7b97\u5b50<\/td>\n<td width=\"25%\">\u8aac\u660e<\/td>\n<td width=\"25%\">\u8a18\u8ff0\u4f8b<\/td>\n<td width=\"25%\">\u8a18\u8ff0\u306e\u610f\u5473<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">&amp;&amp;<\/td>\n<td width=\"25%\">\u8ad6\u7406\u7a4d\uff08\u304b\u3064\uff0fand\uff09<\/td>\n<td width=\"25%\">if (a == 3 &amp;&amp; b == 4)<\/td>\n<td width=\"25%\">a \u304c 3 \u304b\u3064 b \u304c 4 \u306a\u3089<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">||<\/td>\n<td width=\"25%\">\u8ad6\u7406\u548c\uff08\u307e\u305f\u306f\uff0for\uff09<\/td>\n<td width=\"25%\">if (a == 3 || b == 4)<\/td>\n<td width=\"25%\">a \u304c 3 \u307e\u305f\u306f b \u304c 4 \u306a\u3089<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">!<\/td>\n<td width=\"25%\">\u5426\u5b9a\uff08\u3067\u306a\u3044\uff0fnot\uff09<\/td>\n<td width=\"25%\">if (!(a == 3 &amp;&amp; b == 4))<\/td>\n<td width=\"25%\">a \u304c 3 \u304b\u3064 b \u304c 4 \u3001\u3067\u306a\u3044\u306a\u3089<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u3000<span style=\"color: #ff0000;\">\u95a2\u4fc2\u6f14\u7b97\u5b50 &amp;&amp; \u306f &amp; \u304c\uff12\u3064\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\uff08|| \u3082\u540c\u69d8\uff09\u3002<br \/>\n&amp; \uff11\u3064\u3067\u3082\u4ed6\u306e\u610f\u5473\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<br \/>\n\u3057\u304b\u3057\u3001\u671f\u5f85\u3057\u305f\u52d5\u4f5c\u3068\u306f\u306a\u3089\u306a\u3044\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059<\/span>\u3002<\/strong><br \/>\n\u5148\u306e\u65e5\u672c\u8a9e\u3067\u306e\u3046\u308b\u3046\u5e74\u306e\u5b9a\u7fa9\u306f<br \/>\n\u300c\uff14\u3067\u5272\u308a\u5207\u308c\u308b\u3000\u304b\u3064\u3000\uff11\uff10\uff10\u3067\u5272\u308a\u5207\u308c\u306a\u3044\u5e74\u300d\u3000\u307e\u305f\u306f\u3000\u300c\uff14\uff10\uff10\u3067\u5272\u308a\u5207\u308c\u308b\u5e74\u300d<br \/>\n\u3068\u66f8\u304d\u76f4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n\u3064\u307e\u308a\u3001\u5148\u306e\uff12\u3064\u306e if \u6587\u3092\u4e00\u3064\u306b\u307e\u3068\u3081\u3066\u6b21\u306e\u3088\u3046\u306b\u66f8\u304f\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>if-2a.c<\/strong><\/span><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">#include &lt;stdio.h&gt;\r\n \r\nint main() {\r\n    int n;\r\n    \r\n    printf(\"\u5e74=\");\r\n    scanf(\"%d\", &amp;n);\r\n    \r\n    if (((n%4 == 0) &amp;&amp; (n%100 != 0)) || (n%400 == 0)) {\r\n        printf(\"\u3046\u308b\u3046\u5e74\u3067\u3059\\n\");\r\n    }\r\n    \r\n    return 0;\r\n}<\/pre>\n<h4><span class=\"ez-toc-section\" id=\"%e8%aa%b2%e9%a1%8c%ef%bc%95\"><\/span><u>\u8ab2\u984c\uff15<\/u><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5165\u529b\u3055\u308c\u305f\u6574\u6570\u304c\u30013 \u306e\u500d\u6570\u304b 7 \u306e\u500d\u6570\u3067\u3042\u308c\u3070\u3001\u305d\u306e\u6570\u5024\u3092\u8868\u793a\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u305b\u3088\u3002\uff08 || \u3092\u4f7f\u3046\u3002\uff09<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%e8%aa%b2%e9%a1%8c%ef%bc%96\"><\/span><u>\u8ab2\u984c\uff16<\/u><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>&#8220;3 \u306e\u500d\u6570\u304b 7 \u306e\u500d\u6570&#8221;\u3067\u3042\u308b\u4e09\u6841\u306e\u81ea\u7136\u6570\u306e\u5165\u529b\u3092\u4fc3\u3057\u3001\u5165\u529b\u3055\u308c\u305f\u6570\u5024\u304c \u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u753b\u9762\u306b\u51fa\u529b\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u305b\u3088\u3002(if\u6587\u306f\uff11\u56de\u3057\u304b\u4f7f\u3048\u306a\u3044\u3082\u306e\u3068\u3059\u308b\uff09)<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%e7%99%ba%e5%b1%95%e8%aa%b2%e9%a1%8c\"><\/span><u>\u767a\u5c55\u8ab2\u984c<\/u><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>2\u3064\u306e\u5b9f\u6570x,y\u3092\u5165\u529b\u3059\u308b\u3068\u3001\u70b9(x,y)\u304c\u76f4\u7dday=4x-3\u3088\u308a\u4e0a\u5074\u306e\u9818\u57df\u30fb\u76f4\u7dda\u4e0a\u30fb\u4e0b\u5074\u306e\u9818\u57df\u306e\u3069\u3053\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3057\u3001\u3055\u3089\u306b\u3001\u5186x<sup>2<\/sup>+y<sup>2<\/sup>=4\u306e\u5185\u90e8\u30fb\u7dda\u4e0a\u30fb\u5916\u90e8\u306e\u3069\u3053\u306b\u3042\u308b\u304b\u3092\u5224\u5b9a\u3057\u3001\u7d50\u679c\u3092\u8868\u793a\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u305b\u3088\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%e4%bb%8a%e6%97%a5%e6%96%b0%e3%81%97%e3%81%8f%e5%ad%a6%e3%82%93%e3%81%a0%e4%ba%8b\"><\/span>\u4eca\u65e5\u65b0\u3057\u304f\u5b66\u3093\u3060\u4e8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\u6761\u4ef6\u5206\u5c90<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6761\u4ef6\u5206\u5c90\uff08if\u6587\uff09 \u524d\u56de\u306e\u307e\u3068\u3081 \u5909\u6570\u306f\u5fc5\u305a\u5ba3\u8a00\u3057\u3066\u304b\u3089\u7528\u3044\u308b\u3002(int n, double x\u3001\u306a\u3069\uff09 \u5909\u6570\u306e\u4ee3\u5165\u306b\u306f = \u3092\u7528\u3044\u308b\u3002( = \u306e\u53f3\u5074\u306e\u5f0f\u306e\u5024\u304c\u3001\u5de6\u5074\u306e\u5909\u6570\u306b\u4ee3\u5165\u3055\u308c\u308b\uff09 \u5909\u6570\u306e\u8868\u793a\u306e\u4ed5\u65b9\u306f\u6574\u6570\u578b\u3068\u5b9f\u6570\uff08 &hellip; <a href=\"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/%e6%8e%88%e6%a5%ad%e8%b3%87%e6%96%99\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92\/%e8%a8%88%e7%ae%97%e6%95%b0%e5%ad%a6%e6%bc%94%e7%bf%92%e7%ac%ac%ef%bc%93%e5%9b%9e\/\" class=\"more-link\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"screen-reader-text\">\u8a08\u7b97\u6570\u5b66\u6f14\u7fd2\u7b2c\uff13\u56de<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1691,"menu_order":26,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-1757","page","type-page","status-publish","hentry"],"aioseo_notices":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/PaSLRw-sl","_links":{"self":[{"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/pages\/1757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/comments?post=1757"}],"version-history":[{"count":21,"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/pages\/1757\/revisions"}],"predecessor-version":[{"id":3531,"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/pages\/1757\/revisions\/3531"}],"up":[{"embeddable":true,"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/pages\/1691"}],"wp:attachment":[{"href":"https:\/\/home.hiroshima-u.ac.jp\/~mafujii\/wp-json\/wp\/v2\/media?parent=1757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}