{"id":4536,"date":"2026-05-07T13:20:00","date_gmt":"2026-05-07T04:20:00","guid":{"rendered":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/?page_id=4536"},"modified":"2026-05-04T11:58:59","modified_gmt":"2026-05-04T02:58:59","slug":"ex0404","status":"publish","type":"page","link":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/exercise\/ex04\/ex0404\/","title":{"rendered":"\u8ab2\u984c [4] while \u6587\uff084\/9\uff09"},"content":{"rendered":"<div class=\"breadcrumbs align  wp-block-bcn-breadcrumb-trail has-text-color has-background\" vocab=\"https:\/\/schema.org\/\" typeof=\"BreadcrumbList\">\n\t<span><\/span>\n\t<span property=\"itemListElement\" typeof=\"ListItem\"><a property=\"item\" typeof=\"WebPage\" title=\"Go to \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u5de5\u5b66\u7814\u7a76\u5ba4.\" href=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\" class=\"home\" aria-current=\"page\"><span property=\"name\">\u30db\u30fc\u30e0<\/span><\/a><meta property=\"position\" content=\"1\"><\/span><\/div>\n\n\n\n<h4 class=\"wp-block-heading has-background\" style=\"background-color:#d3f28c\"><strong>\u554f 4<\/strong>\uff08\u63d0\u51fa\u30d7\u30ed\u30b0\u30e9\u30e0\u540d\uff1aex0404.c\uff09<\/h4>\n\n\n\n<p class=\"problem\">1 \u3064\u306e\u6574\u6570 n \u3092\u8aad\u307f\u8fbc\u307f\uff0c<span style=\"color:#ff0000\" class=\"has-inline-color\"><strong>n \u306e\u968e\u4e57\uff08n!\uff09\uff0c\u3064\u307e\u308a\uff0c1 \u304b\u3089 n \u307e\u3067\u306e\u6574\u6570\u3092\u3059\u3079\u3066\u304b\u3051\u305f\u5024<\/strong><\/span><strong><span style=\"color:#0000ff\" class=\"has-inline-color\"><\/span><\/strong>\u3092\u51fa\u529b\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u306a\u3055\u3044\uff0e\u305f\u3060\u3057\uff0c\u5fc5\u305a <strong><span style=\"color:#0000ff\" class=\"has-inline-color\">while \u6587\u3092\u4f7f\u3046\u3053\u3068<\/span><\/strong>\uff08<strong><mark style=\"background-color:#fff5a6\" class=\"has-inline-color\">do &#8211; while \u6587\u3067\u306f\u306a\u3044<\/mark><\/strong>\uff09\uff0e\u305d\u3057\u3066\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-strong-blue-color\">if \u6587\u306f\u4f7f\u308f\u306a\u3044<\/mark><\/strong>\u3053\u3068\uff0e<br>\u306a\u304a\uff0cn \u306f 0 \u4ee5\u4e0a 10 \u4ee5\u4e0b\u306e\u6574\u6570\u3067\u3042\u308b\u3068\u4eee\u5b9a\u3057\u3066\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u3063\u3066\u3088\u3044\uff0e<br>\u63d0\u51fa\u3059\u308b\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\uff08\u30bd\u30fc\u30b9\u30d7\u30ed\u30b0\u30e9\u30e0\uff09\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u306f <strong><span style=\"color:#008800\" class=\"has-inline-color\">ex0404.c<\/span><\/strong> \u3068\u3057\u306a\u3055\u3044\uff0e<\/p>\n\n\n\n<p class=\"hint\"><strong>\u3010\u30d2\u30f3\u30c8\u3011<\/strong><br><strong><span class=\"has-inline-color has-black-color\"><span style=\"color:#ff0000\" class=\"has-inline-color\"><\/span><\/span><\/strong><span class=\"has-inline-color has-black-color\"><strong><span style=\"color:#0000ff\" class=\"has-inline-color\"><\/span><\/strong>\u968e\u4e57\u3092\u6c42\u3081\u308b\u624b\u9806\uff08\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff09\u3068\u3057\u3066\u306f\u4ee5\u4e0b\u304c\u8003\u3048\u3089\u308c\u307e\u3059\uff1a<\/span><br><span class=\"has-inline-color has-black-color\"><br>\uff08\u3053\u308c\u304b\u3089\u6c42\u3081\u308b\u968e\u4e57\u3092 <kbd>fact<\/kbd> \u3068\u3057\u3066\uff09<br>\u3000\u2460 <kbd>fact<\/kbd> \u3068 <kbd>k<\/kbd> \u3092<span class=\"tadv-color\" style=\"color:#ff0000\">\u3044\u305a\u308c\u3082 1 <\/span>\u3068\u3059\u308b\uff08\u305f\u3060\u3057\uff0c<\/span><kbd><span class=\"has-inline-color has-black-color\">fact<\/span> <\/kbd>\u3068 <span class=\"has-inline-color has-black-color\"><kbd>k<\/kbd> \u306f int \u578b\u306e\u5909\u6570\uff09<br>\u3000\u2461 <kbd>k &lt;= n<\/kbd> \u3067\u3042\u308b\u9650\u308a\u4ee5\u4e0b\u306e\u2462\uff0c\u2463\u3092\u7e70\u308a\u8fd4\u3059\uff08while \u6587\u3092\u4f7f\u7528\uff09\uff1a<br>\u3000\u3000\u3000\u2462 <kbd>fact *= k;<br><\/kbd>\u3000\u3000\u3000\u2463 <kbd>k++;<br><\/kbd>\u3000\u2464 while \u3067\u306e\u7e70\u308a\u8fd4\u3057\u304c\u7d42\u308f\u3063\u305f\u5f8c\uff0c\u6700\u5f8c\u306b <kbd>fact<\/kbd> \u3092\u51fa\u529b\u3059\u308b\uff0e<br><br>\u3010\u6ce8\u610f\u3011<span class=\"tadv-color\" style=\"color:#ff0000\"><kbd>fact<\/kbd> \u3092 <kbd>0<\/kbd> \u3067\u306f\u306a\u304f <kbd>1<\/kbd> \u3067\u521d\u671f\u5316\u3057\u3066\u3044\u308b\u70b9\u306b\u6ce8\u610f<\/span>\u3057\u3066\u304f\u3060\u3055\u3044\uff0e<\/span><br><span class=\"has-inline-color has-black-color\">\u306a\u305c\u306a\u3089\uff0c\u3053\u306e\u5834\u5408\u306f\u8db3\u3057\u7b97\u3067\u306f\u306a\u304f\u639b\u3051\u7b97\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3044\u304f\u306e\u3067\uff0c <kbd>0<\/kbd> \u3092\u521d\u671f\u5024\u306b\u3057\u3066\u3044\u308b\u3068\u7b54\u3048\u306f\u305a\u3063\u3068 <kbd>0<\/kbd> \u306e\u307e\u307e\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\uff0e<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u3010\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u7d50\u679c\u3011\uff08\u305d\u306e\uff11\uff09<\/strong>\u203b<mark style=\"background-color:rgba(0, 0, 0, 0);color:#ff0000\" class=\"has-inline-color\">\u8d64\u5b57<\/mark>\u306f\u5b9f\u884c\u6642\u306b\u30ad\u30fc\u30dc\u30fc\u30c9\u304b\u3089\u5165\u529b\u3059\u308b\u5185\u5bb9<br>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u793a\u306f<strong> <mark style=\"background-color:#ffd9fc\" class=\"has-inline-color\">n! \u3067\u306f\u306a\u304f 6!<\/mark> <\/strong>\u306b\u306a\u3063\u3066\u3044\u308b\u70b9\u306b\u6ce8\u610f\u305b\u3088\uff0e<br>\u3042\u308f\u305b\u3066\uff0c<strong><mark style=\"background-color:#ccffbe\" class=\"has-inline-color\">\u672b\u5c3e\u306b\u6539\u884c\uff08\\n\uff09<\/mark><\/strong>\u3092\u66f8\u304d\u5fd8\u308c\u306a\u3044\u3088\u3046\u6ce8\u610f\u305b\u3088\uff0e<\/li>\n<\/ul>\n\n\n\n<pre class=\"example\" style=\"width: 220px; margin-top: -15pt; margin-bottom: 10px\">n \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">6<\/span>\n6! = 720<span style=\"color:#00aa00\">\u23ce<\/span>\n\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u3010\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u7d50\u679c\u3011\uff08\u305d\u306e\uff12\uff09<\/strong>\u203b<span style=\"color:#ff0000\" class=\"has-inline-color\">\u8d64\u5b57<\/span>\u306f\u5b9f\u884c\u6642\u306b\u30ad\u30fc\u30dc\u30fc\u30c9\u304b\u3089\u5165\u529b\u3059\u308b\u5185\u5bb9<\/li>\n<\/ul>\n\n\n\n<pre class=\"example\" style=\"width: 220px; margin-top: -15pt; margin-bottom: 10px\">n \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">10<\/span>\n10! = 3628800<span style=\"color:#00aa00\">\u23ce<\/span>\n\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u3010\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u7d50\u679c\u3011\uff08\u305d\u306e\uff13\uff09<\/strong>\u203b<span style=\"color:#ff0000\" class=\"has-inline-color\">\u8d64\u5b57<\/span>\u306f\u5b9f\u884c\u6642\u306b\u30ad\u30fc\u30dc\u30fc\u30c9\u304b\u3089\u5165\u529b\u3059\u308b\u5185\u5bb9<\/li>\n<\/ul>\n\n\n\n<pre class=\"example\" style=\"width: 220px; margin-top: -15pt; margin-bottom: 10px\">n \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">0<\/span>\n0! = 1<span style=\"color:#00aa00\">\u23ce<\/span>\n\n<\/pre>\n\n\n\n<p class=\"miss\"><strong>\u3010\u904e\u53bb\u306b\u3042\u3063\u305f\u30df\u30b9\uff08\u5b9f\u969b\u306b\u6e1b\u70b9\u3068\u306a\u308a\uff0c\u3084\u308a\u76f4\u3057\u3092\u547d\u3058\u3089\u308c\u305f\u4f8b\uff09\u3011<\/strong><br> \u25a0 <strong>\u5b9f\u884c\u306e<span class=\"tadv-color\" style=\"color:#ff0000\">\u753b\u9762\u51fa\u529b\u304c\u4e0a\u306e\u4f8b\u3068\u9055\u3046<\/span><\/strong>\uff08<strong><span class=\"tadv-color\" style=\"color:#0000ff\">\u304d\u3061\u3093\u3068\u78ba\u8a8d\u3057\u3066\u3044\u306a\u3044<\/span><\/strong>\uff09\uff0e<br>\u3000\u3000\uff08\u4f8b\uff11\uff09\u51fa\u529b\u306b\u5165\u529b\u5024\u3092\u4f7f\u3063\u3066\u304a\u3089\u305a\u300c<kbd><span class=\"tadv-color\" style=\"color:#ff0000\">n<\/span>! =<\/kbd>\u300d\u306e\u3088\u3046\u306b<strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0000ff\" class=\"has-inline-color\">\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u8868\u8a18<\/mark><\/strong>\u306b\u306a\u3063\u3066\u3044\u308b\uff0e<br>\u3000\u3000\uff08\u4f8b\uff12\uff09\u51fa\u529b\u3055\u308c\u308b\u6570\u5024\u304c\u9055\u3063\u3066\u3044\u308b\uff0e<br> \u25a0 \u554f\u984c\u6587\u306e\u6307\u793a\u3092\u898b\u843d\u3068\u3057\u3066\u3044\u3066 do-while \u6587\u3067\u4f5c\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u308b\uff0e<br> \u25a0 <strong><span class=\"tadv-color\" style=\"color:#0000ff\">\u30a4\u30f3\u30c7\u30f3\u30c8\u306b\u4e0d\u5099<\/span><\/strong>\u304c\u3042\u308b\uff08<a rel=\"noreferrer noopener\" href=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/vscode-%e4%b8%8a%e3%81%a7%e3%82%a4%e3%83%b3%e3%83%87%e3%83%b3%e3%83%88%e3%82%92%e8%87%aa%e5%8b%95%e3%81%a7%e6%8f%83%e3%81%88%e3%82%8b%e6%96%b9%e6%b3%95\/\" target=\"_blank\">VSCode \u4e0a\u3067\u30a4\u30f3\u30c7\u30f3\u30c8\u3092\u81ea\u52d5\u3067\u63c3\u3048\u308b\u4f5c\u696d<\/a>\u3092\u3084\u3063\u3066\u3044\u306a\u3044\uff09\uff0e<\/p>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-very-dark-gray-color has-css-opacity has-very-dark-gray-background-color has-background is-style-wide\"\/>\n\n\n\n<p class=\"has-text-align-right\"><strong>\u30df\u30b9\u304c\u7121\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u305f\u3089<\/strong>\u6b21\u306e\u554f\u984c\u3078 \u2192 [ <a href=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/exercise\/ex04\/ex0405\/\">\u554f5 (ex0405.c)<\/a> ]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u554f 4\uff08\u63d0\u51fa\u30d7\u30ed\u30b0\u30e9\u30e0\u540d\uff1aex0404.c\uff09 1 \u3064\u306e\u6574\u6570 n \u3092\u8aad\u307f\u8fbc\u307f\uff0cn \u306e\u968e\u4e57\uff08n!\uff09\uff0c\u3064\u307e\u308a\uff0c1 \u304b\u3089 n \u307e\u3067\u306e\u6574\u6570\u3092\u3059\u3079\u3066\u304b\u3051\u305f\u5024\u3092\u51fa\u529b\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u306a\u3055\u3044\uff0e\u305f\u3060\u3057\uff0c\u5fc5\u305a while \u6587\u3092\u4f7f\u3046\u3053\u3068\uff08 <a class=\"more-link\" href=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/exercise\/ex04\/ex0404\/\">&#8230; more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1031,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4536","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/4536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/comments?post=4536"}],"version-history":[{"count":19,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/4536\/revisions"}],"predecessor-version":[{"id":12337,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/4536\/revisions\/12337"}],"up":[{"embeddable":true,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/1031"}],"wp:attachment":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/media?parent=4536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}