{"id":10531,"date":"2026-07-02T08:30:00","date_gmt":"2026-07-01T23:30:00","guid":{"rendered":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/?page_id=10531"},"modified":"2026-06-26T15:48:40","modified_gmt":"2026-06-26T06:48:40","slug":"ex1206a","status":"publish","type":"page","link":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/exercise-advance\/ex12\/ex1206a\/","title":{"rendered":"\u8ab2\u984c [12] \u30d5\u30a1\u30a4\u30eb\u51e6\u7406\uff086\/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 6<\/strong>\uff08\u63d0\u51fa\u30d7\u30ed\u30b0\u30e9\u30e0\u540d\uff1aex1206a.c\uff09<\/h4>\n\n\n\n<p class=\"problem wp-block-paragraph\"><a href=\"http:\/\/se.cite.ehime-u.ac.jp\/lecture\/prog\/material\/ex1206a.c\" target=\"_blank\" rel=\"noreferrer noopener\">\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\uff08ex1206a.c\uff09<\/a>\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\uff0c\u4ee5\u4e0b\u306e\u52d5\u4f5c\u3092\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3068\u3057\u3066\u4ed5\u4e0a\u3052\u306a\u3055\u3044\uff0e<br><br>\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\uff0c\u51fa\u529b\u5148\u3068\u306a\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u540d\u524d\uff08256 \u6587\u5b57\u672a\u6e80\uff09\u3068\u6574\u6570 <kbd>x<\/kbd> \u3092\u8aad\u307f\u8fbc\u307f\uff0c<br>\u305d\u306e\u30d5\u30a1\u30a4\u30eb\u3078 <strong><span class=\"tadv-color\" style=\"color:#ff0000\"><kbd>x<\/kbd> \u4ee5\u4e0b\u306e\u7d20\u6570\u3092\u3059\u3079\u3066\u66f8\u304d\u8fbc\u3080<\/span><\/strong>\u3082\u306e\u3068\u3059\u308b\uff0e<br>\u305f\u3060\u3057\uff0c\u6574\u6570\u306e\u66f8\u304d\u8fbc\u307f\u3067\u306f <strong><span class=\"tadv-color\" style=\"color:#0000ff\">1 \u500b\u305a\u3064\u6539\u884c<\/span><\/strong>\u3059\u308b\u3053\u3068\uff0e<br>\u306a\u304a\uff0c<strong>\u7d20\u6570\u306e\u5224\u5b9a\u306b\u306f <kbd>is_prime<\/kbd> \u3068\u3044\u3046\u95a2\u6570\u3092\u7528\u610f\u3057\u3066\u3044\u308b\u306e\u3067\u305d\u3061\u3089\u3092\u4f7f\u3046<\/strong>\u3053\u3068\uff0e<br><br>\u6b21\u306e\u70b9\u306b\u6ce8\u610f\u305b\u3088\uff1a<strong><mark style=\"background-color:#00ffff\" class=\"has-inline-color\">\u4f8b\u5e74\uff0c\u3053\u3053\u3092\u898b\u843d\u3068\u3057\u3066\u3084\u308a\u76f4\u3057\u306b\u306a\u308b\u4eba\u304c\u591a\u3044<\/mark><\/strong>\uff0e<br>\u25cf \u30d5\u30a1\u30a4\u30eb\u306e\u30aa\u30fc\u30d7\u30f3\u3067\u306f<strong><span class=\"tadv-color\" style=\"color:#ff0000\">\u30a8\u30e9\u30fc\u51e6\u7406\u3082\u5fd8\u308c\u305a\u306b<\/span><\/strong>\u66f8\u304f\u3053\u3068\uff0e<br>\u25cf \u30d5\u30a1\u30a4\u30eb\u3078\u306e\u66f8\u304d\u8fbc\u307f\u7d42\u4e86\u5f8c\u306b\u306f\uff0c\u5fc5\u305a<strong><span class=\"tadv-color\" style=\"color:#0000ff\">\u30d5\u30a1\u30a4\u30eb\u306e\u30af\u30ed\u30fc\u30ba\u3092\u5fd8\u308c\u306a\u3044<\/span><\/strong>\u3053\u3068\uff0e<br>\u25cf \u3042\u308b\u6574\u6570 <kbd>k<\/kbd> \u304c\u7d20\u6570\u304b\u3069\u3046\u304b\u306f\u6b21\u306e\u3088\u3046\u306b\u5224\u5b9a\u3067\u304d\u308b\uff08\u904e\u53bb\u306e\u5185\u5bb9\u306e\u5fa9\u7fd2\uff09<br>\u3000\u3000<kbd>if ( is_prime(k) ){ ...<\/kbd><br>\u25cf \u3053\u306e\u554f\u984c\u3067\u306f <kbd>x<\/kbd> <strong><span class=\"tadv-color\" style=\"color:#ff0000\">\u4ee5\u4e0b<\/span><\/strong>\u306e\u7d20\u6570\u3092\u66f8\u304d\u8fbc\u3080\u3053\u3068\u306b\u306a\u308b\u306e\u3067\uff0c<strong><span class=\"tadv-color\" style=\"color:#ff0000\"><kbd>x<\/kbd> \u305d\u306e\u3082\u306e\u304c\u7d20\u6570\u306e\u5834\u5408\u3082\u5bfe\u8c61<\/span><\/strong>\u306b\u542b\u307e\u308c\u308b\uff0e<br><br><strong>\u3010\u6ce8\u610f\u3011<\/strong><br>\u3053\u306e\u554f\u984c\u3067\u306f<span class=\"tadv-background-color\" style=\"background-color:#ffeb00\"><strong>\u95a2\u6570 <kbd>is_prime<\/kbd> \u306e\u5185\u5bb9\u306f\u4e00\u5207\u66f8\u304d\u63db\u3048\u306a\u3044<\/strong><\/span>\u3053\u3068\uff0e<\/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<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: 500px; margin-top: -15pt; margin-bottom: 10px\">\u51fa\u529b\u5148\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">data.txt<\/span>\n\u6b63\u306e\u6574\u6570 1 \u3064\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">20<\/span>\n20 \u4ee5\u4e0b\u306e\u7d20\u6570\u3092 data.txt \u306b\u66f8\u304d\u8fbc\u307f\u307e\u3057\u305f\uff0e<span style=\"color:#00aa00\">\u23ce<\/span>\n\n<\/pre>\n\u3010\u5b9f\u884c\u4f8b\uff11\u3067data.txt\u306b\u66f8\u304d\u8fbc\u307e\u308c\u308b\u5185\u5bb9\u3011\n<pre style=\"border: solid 1pt black; padding: 0; width: 80px; margin-left:20pt\">2<span style=\"color:#00aa00\">\u23ce<\/span>\n3<span style=\"color:#00aa00\">\u23ce<\/span>\n5<span style=\"color:#00aa00\">\u23ce<\/span>\n7<span style=\"color:#00aa00\">\u23ce<\/span>\n11<span style=\"color:#00aa00\">\u23ce<\/span>\n13<span style=\"color:#00aa00\">\u23ce<\/span>\n17<span style=\"color:#00aa00\">\u23ce<\/span>\n19<span style=\"color:#00aa00\">\u23ce<\/span><\/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: 500px; margin-top: -15pt; margin-bottom: 10px\">\u51fa\u529b\u5148\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">data.txt<\/span>\n\u6b63\u306e\u6574\u6570 1 \u3064\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">3<\/span>\n3 \u4ee5\u4e0b\u306e\u7d20\u6570\u3092 data.txt \u306b\u66f8\u304d\u8fbc\u307f\u307e\u3057\u305f\uff0e<span style=\"color:#00aa00\">\u23ce<\/span>\n\n<\/pre>\n\u3010\u5b9f\u884c\u4f8b\uff12\u3067data.txt\u306b\u66f8\u304d\u8fbc\u307e\u308c\u308b\u5185\u5bb9\u3011\n<pre style=\"border: solid 1pt black; padding: 0; width: 80px; margin-left:20pt\">2<span style=\"color:#00aa00\">\u23ce<\/span>\n3<span style=\"color:#00aa00\">\u23ce<\/span><\/pre>\n\n\n\n<p class=\"miss wp-block-paragraph\"><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\u3068\u66f8\u304d\u8fbc\u307f\u5148\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\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> \u25a0 \u6ce8\u610f\u3059\u3079\u304d\u70b9\u3068\u3057\u3066\u8b66\u544a\u3055\u308c\u3066\u3044\u305f\u8aa4\u308a\u306b\u8a72\u5f53\u3057\u3066\u3044\u308b\uff0e<br> \u25a0 <strong><span class=\"tadv-color\" style=\"color:#0000ff\">\u95a2\u6570 is_prime \u3092\u66f8\u304d\u63db\u3048\u3066<\/span><\/strong>\u3057\u307e\u3063\u3066\u3044\u308b\uff0e<br> \u25a0 \u7d20\u6570\u5224\u5b9a\u306e\u95a2\u6570 <kbd>is_prime<\/kbd> \u3092\u4f7f\u308f\u305a\uff0c\u308f\u3056\u308f\u3056\u540c\u3058\u51e6\u7406\u3092\u81ea\u524d\u3067\u66f8\u3053\u3046\u3068\u3057\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<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<p class=\"wp-block-paragraph\">\u2190 [ <a href=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/exercise-advance\/ex12\/ex1205a\/\">\u554f 5 (ex1205a.c)<\/a> ]<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"has-text-align-right wp-block-paragraph\"><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-advance\/ex12\/ex1207a\/\"> \u554f 7 (ex1207a.c)<\/a> ]<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u554f 6\uff08\u63d0\u51fa\u30d7\u30ed\u30b0\u30e9\u30e0\u540d\uff1aex1206a.c\uff09 \u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\uff08ex1206a.c\uff09\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\uff0c\u4ee5\u4e0b\u306e\u52d5\u4f5c\u3092\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3068\u3057\u3066\u4ed5\u4e0a\u3052\u306a\u3055\u3044\uff0e \u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\uff0c\u51fa\u529b\u5148\u3068\u306a\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u540d\u524d\uff08256 \u6587\u5b57\u672a\u6e80\uff09\u3068\u6574\u6570 <a class=\"more-link\" href=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/exercise-advance\/ex12\/ex1206a\/\">&#8230; more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":10496,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-10531","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/10531","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=10531"}],"version-history":[{"count":3,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/10531\/revisions"}],"predecessor-version":[{"id":12770,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/10531\/revisions\/12770"}],"up":[{"embeddable":true,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/10496"}],"wp:attachment":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/media?parent=10531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}