{"id":10218,"date":"2026-06-18T08:30:00","date_gmt":"2026-06-17T23:30:00","guid":{"rendered":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/?page_id=10218"},"modified":"2026-06-13T12:51:43","modified_gmt":"2026-06-13T03:51:43","slug":"p1004a","status":"publish","type":"page","link":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/practice-advance\/p10\/p1004a\/","title":{"rendered":"\u7df4\u7fd2 [10] \u30dd\u30a4\u30f3\u30bf\u2460\uff084\/5\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-light-green-cyan-background-color has-background\"><strong>\u7df4\u7fd2 4<\/strong>\uff08\u63d0\u51fa\u30d7\u30ed\u30b0\u30e9\u30e0\u540d\uff1ap1004a.c\uff09<\/h4>\n\n\n\n<p class=\"problem wp-block-paragraph\">\u307e\u305a\uff0c<a href=\"\/lecture\/prog\/material\/p1004a.c\" target=\"_blank\" rel=\"noreferrer noopener\">\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\uff08p1004a.c\uff09<\/a>\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u306a\u3055\u3044\uff0e<br>\u305d\u3057\u3066\uff0cp1004a.c \u3092<strong><span style=\"color: #ff0000;\" class=\"has-inline-color\"><span class=\"tadv-color\" style=\"color:#0000ff\">\u7de8\u96c6\u3057\u3066\u56db\u6368\u4e94\u5165\u3092\u884c\u3046\u95a2\u6570 <kbd>round_n<\/kbd> \u3092\u5b8c\u6210<\/span><\/span><\/strong>\u3055\u305b\u306a\u3055\u3044\uff0e<br><br>\u7df4\u7fd2 2 \u3067\u306f 1 \u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3059\u308b\u95a2\u6570 <kbd>round1<\/kbd> \u3092\u4f5c\u3063\u305f\u304c\uff0c<br>\u3053\u306e\u554f\u984c\u3067\u306f\u3053\u308c\u3092 <strong><span class=\"tadv-color\" style=\"color:#0000ff\">1 \u306e\u4f4d\u306b\u9650\u5b9a\u305b\u305a<\/span><\/strong>\uff0c<span class=\"tadv-color\" style=\"color:#ff0000\"><kbd><strong>n<\/strong><\/kbd><\/span><strong><span class=\"tadv-color\" style=\"color:#ff0000\"> \u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165<\/span><\/strong>\u3059\u308b\u95a2\u6570 <kbd>round_n<\/kbd> \u306b\u62e1\u5f35\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\uff0e<br>\u305f\u3060\u3057\uff0c<kbd>n<\/kbd> \u306f 1 \u4ee5\u4e0a\u306e 10 \u306e\u3079\u304d\u4e57\uff081, 10, 100, 1000, &#8230;.\uff09\u3067\u3042\u308b\u3068\u4eee\u5b9a\u3057\u3066\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u3063\u3066\u3088\u3044\uff0e<br><br>\u306a\u304a\uff0c\u95a2\u6570 <kbd>round_n<\/kbd> \u306e\u5ba3\u8a00\u306f\u6b21\u306e\u901a\u308a\u3068\u3059\u308b\uff1a<br>\u3000\u3000\u3000\u3000<kbd>void round_n( int *px, int n )<\/kbd><br><br>\u4f8b\u3048\u3070\uff0c<kbd>x = 98765<\/kbd> \u3067\u3042\u3063\u305f\u5834\u5408\uff0c<kbd>round_n(&amp;x, 100);<\/kbd> \u3092\u5b9f\u884c\u3059\u308b\u3068<br>\u300c100 \u306e\u4f4d\u304c\u56db\u6368\u4e94\u5165\u300d\u3055\u308c\u3066<kbd> x = 99000<\/kbd> \u3068\u306a\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:#fff300\"><strong>main \u95a2\u6570\u306e\u5185\u5bb9\u306f\u4e00\u5207\u66f8\u304d\u63db\u3048\u306a\u3044<\/strong><\/span>\u3053\u3068\uff0e<br>\u307e\u305f\uff0c\u5b9f\u884c\u4f8b\u3067\u306f <kbd>n<\/kbd> = 1, 10, 100 \u306e 3 \u901a\u308a\u3057\u304b\u767b\u5834\u3057\u3066\u3044\u306a\u3044\u304c\uff0c<kbd>n<\/kbd> = 1000, 10000, &#8230;. \u7b49\uff0c<strong><span class=\"tadv-color\" style=\"color:#0000ff\">10 \u306e\u3079\u304d\u4e57\u3067\u3042\u308c\u3070\u3059\u3079\u3066\u5bfe\u5fdc\u3067\u304d\u308b<\/span><\/strong>\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u4ed5\u4e0a\u3052\u308b\u3053\u3068\uff0e<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-red-color\">\u3055\u3082\u306a\u304f\u3070\u4e0d\u6b63\u89e3\u3068\u898b\u306a\u3059\uff0e<\/mark><\/strong><br>\u305f\u3060\u3057\uff0c<kbd>n<\/kbd> \u304c int \u578b\u3067\u8868\u73fe\u53ef\u80fd\u306a\u7bc4\u56f2\u3092\u8d85\u3048\u3066\u5927\u304d\u306a\u5024\u306b\u306a\u308b\u5834\u5408\u306f\u8003\u3048\u306a\u304f\u3066\u3088\u3044\uff0e<\/p>\n\n\n\n<p class=\"hint wp-block-paragraph\"><strong>\u3010\u30d2\u30f3\u30c8\u3011<\/strong><br>\u3053\u306e\u554f\u984c\u3067\u3082\u3084\u308a\u65b9\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u304c\uff0c\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\uff1a<br><br><kbd>x = 98765<\/kbd>, <kbd>n = 100<\/kbd> \u306e\u5834\u5408\u3092\u4f8b\u306b\u3068\u308a\u307e\u3059\uff0e<br>\u307e\u305a\uff0c<kbd>n = 100<\/kbd> \u3067\u3042\u308b\u3053\u3068\u304b\u3089 <strong>100 \u306e\u4f4d\u3088\u308a\u4e0b\u306e\u6570\u5b57\u306f\u898b\u306a\u304f\u3066\u3082\u3088\u3044<\/strong>\u3053\u3068\u306b\u306a\u308a\u307e\u3059\uff0e<br>\u305d\u3053\u3067<strong><span class=\"tadv-color\" style=\"color:#ff0000\">\u3044\u3063\u305f\u3093\u5143\u306e <kbd>x<\/kbd> \u3092 <kbd>n<\/kbd> \u3067\u5272\u3063\u3066<\/span><\/strong>\u3057\u307e\u3044\u307e\u3059\uff08<kbd>x \/= n;<\/kbd> \u3042\u308b\u3044\u306f <kbd>x = x \/ n;<\/kbd>\uff09<br>\u305d\u3046\u3059\u308b\u3068\uff0c<strong>\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306f\u5207\u308a\u6368\u3066\u306b\u306a\u308b\u306e\u3067<\/strong> <kbd>98765\/100 = <\/kbd><strong><span class=\"tadv-color\" style=\"color:#0000ff\"><kbd>987<\/kbd> \u304c\u65b0\u305f\u306a <kbd>x<\/kbd> <\/span><\/strong>\u3068\u306a\u308a\u307e\u3059\uff0e<br><br>\u3053\u306e\u5834\u5408\uff0c<strong>1 \u306e\u4f4d\u306f\u5143\u3005\u306e 100 \u306e\u4f4d<\/strong>\u3067\u3042\u308a\uff0c\u3053\u3053\u3067<strong><span class=\"tadv-color\" style=\"color:#0000ff\">\u7df4\u7fd2 2 \u3068\u540c\u3058\u3088\u3046\u306b 1 \u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165<\/span><\/strong>\u3057\u3066\u3042\u3052\u307e\u3059\uff0e<br>\u3064\u307e\u308a <kbd>x = 987<\/kbd> \u306f\u56db\u6368\u4e94\u5165\u306b\u3088\u3063\u3066 <kbd>x = <span class=\"tadv-color\" style=\"color:#0000ff\">990<\/span><\/kbd> \u306b\u306a\u308a\u307e\u3059\uff0e<br>\u305d\u306e\u5f8c\uff0c<strong><span class=\"tadv-color\" style=\"color:#ff0000\">\u518d\u3073 <kbd>x<\/kbd> \u3092 <kbd>n<\/kbd> \u500d\u3057\u3066\u3042\u3052\u308c\u3070\u5143\u306e\u6841\u6570\u306b<\/span><\/strong>\u623b\u308a\u307e\u3059\uff08<kbd>x *= n;<\/kbd> \u3042\u308b\u3044\u306f <kbd>x = x * n;<\/kbd>\uff09\uff0e<br>\u3064\u307e\u308a <kbd>x = <span class=\"tadv-color\" style=\"color:#0000ff\">990<\/span><span class=\"tadv-color\" style=\"color:#ff0000\">00<\/span><\/kbd> \u304c\u5f97\u3089\u308c\u308b\u308f\u3051\u3067\u3059\uff0e<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u3010\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u4f8b\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<br>\u203b\u4ee5\u4e0b\u306e <strong><mark style=\"background-color:#ffd0f6\" class=\"has-inline-color\">3 \u7a2e\u985e\u306e\u5b9f\u884c\u4f8b\u3068\u5b8c\u5168\u306b\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u3092\u5fc5\u305a\u78ba\u8a8d<\/mark><\/strong>\u305b\u3088\uff0e<br>\uff08\u6bce\u5e74\u306e\u3088\u3046\u306b\uff0c<strong>\u5b9f\u884c\u4f8b 1 \u3059\u3089\u9055\u3063\u3066\u3044\u308b\u3068\u3044\u3046\u300c\u8ad6\u5916\u300d\u306a\u4eba<\/strong>\u304c\u3044\u307e\u3059\uff09<\/li>\n<\/ul>\n\n\n\n<pre class=\"example\" style=\"width: 350px; margin-top: -15pt; margin-bottom: 10px;\">\u6574\u6570\u3092 1 \u3064\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span class=\"has-inline-color\" style=\"color: #ff0000;\">12345<\/span>\n\u3069\u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3057\u307e\u3059\u304b\uff1a<span class=\"has-inline-color\" style=\"color: #ff0000;\">10<\/span>\n10 \u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3057\u305f\u5024 = 12300<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\u4f8b\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: 350px; margin-top: -15pt; margin-bottom: 10px;\">\u6574\u6570\u3092 1 \u3064\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span class=\"has-inline-color\" style=\"color: #ff0000;\">950<\/span>\n\u3069\u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3057\u307e\u3059\u304b\uff1a<span class=\"has-inline-color\" style=\"color: #ff0000;\">100<\/span>\n100 \u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3057\u305f\u5024 = 1000<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\u4f8b\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: 350px; margin-top: -15pt; margin-bottom: 10px;\">\u6574\u6570\u3092 1 \u3064\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span class=\"has-inline-color\" style=\"color: #ff0000;\">12345<\/span>\n\u3069\u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3057\u307e\u3059\u304b\uff1a<span class=\"has-inline-color\" style=\"color: #ff0000;\">1<\/span>\n1 \u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3057\u305f\u5024 = 12350<span style=\"color:#00aa00\">\u23ce<\/span>\n\n<\/pre>\n\n\n\n<p class=\"miss wp-block-paragraph\"><strong>\u3010\u904e\u53bb\u306b\u3042\u3063\u305f\u30df\u30b9\uff08\u6e1b\u70b9\u3068\u306a\u308a\uff0c\u3084\u308a\u76f4\u3057\u3092\u547d\u3058\u3089\u308c\u308b\uff09\u3011<\/strong> <br> \u25a0 <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color: #ff0000;\" class=\"has-inline-color\">3 \u7a2e\u985e\u306e\u5b9f\u884c\u4f8b\u3092\u78ba\u8a8d\u305b\u305a\u306b<\/mark>\u63d0\u51fa<\/strong>\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b\uff0e <br>\u3000\u3064\u307e\u308a\uff0c<strong><span class=\"tadv-color\" style=\"color:#0000ff\">\u56db\u6368\u4e94\u5165\u3055\u308c\u305f\u5024\u304c\u5fae\u5999\u306b\u9055\u3063\u3066\u3044\u308b<\/span><\/strong>\uff0e<br> \u25a0 \u5bfe\u5fdc\u3067\u304d\u308b <kbd>n<\/kbd> \u304c <strong><span class=\"tadv-color\" style=\"color:#ff0000\">1, 10, 100 \u306e 3 \u30d1\u30bf\u30fc\u30f3\u306b\u9650\u5b9a<\/span><\/strong>\u3055\u308c\u3066\u3057\u307e\u3063\u3066\u3044\u308b\uff0e<br> \u25a0 <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-strong-blue-color\">\u30a4\u30f3\u30c7\u30f3\u30c8\u306b\u4e0d\u5099<\/mark><\/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-black-color has-css-opacity has-black-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\/practice-advance\/p10\/p1003a\/\">\u7df4\u7fd23 (p1003a.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\/practice-advance\/p10\/p1005a\/\">\u7df4\u7fd25 (p1005a.c)<\/a> ]<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7df4\u7fd2 4\uff08\u63d0\u51fa\u30d7\u30ed\u30b0\u30e9\u30e0\u540d\uff1ap1004a.c\uff09 \u307e\u305a\uff0c\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\uff08p1004a.c\uff09\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u306a\u3055\u3044\uff0e\u305d\u3057\u3066\uff0cp1004a.c \u3092\u7de8\u96c6\u3057\u3066\u56db\u6368\u4e94\u5165\u3092\u884c\u3046\u95a2\u6570 round_n \u3092\u5b8c\u6210\u3055\u305b\u306a\u3055\u3044\uff0e \u7df4\u7fd2 2 \u3067\u306f  <a class=\"more-link\" href=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/practice-advance\/p10\/p1004a\/\">&#8230; more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":10200,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-10218","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/10218","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=10218"}],"version-history":[{"count":3,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/10218\/revisions"}],"predecessor-version":[{"id":12654,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/10218\/revisions\/12654"}],"up":[{"embeddable":true,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/10200"}],"wp:attachment":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/media?parent=10218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}