{"id":5744,"date":"2026-06-04T08:30:00","date_gmt":"2026-06-03T23:30:00","guid":{"rendered":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/?page_id=5744"},"modified":"2026-06-01T15:28:55","modified_gmt":"2026-06-01T06:28:55","slug":"ex0806","status":"publish","type":"page","link":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/exercise\/ex08\/ex0806\/","title":{"rendered":"\u8ab2\u984c [8] \u95a2\u6570\u2460\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\uff1aex0806.c\uff09<\/h4>\n\n\n\n<p class=\"problem wp-block-paragraph\"><a rel=\"noreferrer noopener\" href=\"http:\/\/se.cite.ehime-u.ac.jp\/lecture\/prog\/material\/ex0806.c\" target=\"_blank\">\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\uff08ex0806.c\uff09<\/a>\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\uff0c\u305d\u306e\u4e2d\u306e<strong><span style=\"color:#0000ff\" class=\"tadv-color\">\u95a2\u6570 <kbd>print_relative_diff<\/kbd> \u3092\u5b8c\u6210\u3055\u305b\u306a\u3055\u3044<\/span><\/strong>\uff0e<br>\u95a2\u6570 <kbd>print_relative_diff<\/kbd> \u3067\u306f\uff0c\u5f15\u6570\u3068\u3057\u3066\u4e0e\u3048\u3089\u308c\u305f 2 \u3064\u306e\u5b9f\u6570 <kbd>x<\/kbd>, <kbd>y<\/kbd> \u306b\u3064\u3044\u3066\uff0c<strong><span style=\"color:#ff0000\" class=\"tadv-color\"><kbd>|x-y|\/|x|<\/kbd> \u3092\u5b9f\u884c\u4f8b\u306e\u3088\u3046\u306b\u51fa\u529b\u3059\u308b<\/span><\/strong>\u3082\u306e\u3068\u3059\u308b\uff08<strong><span style=\"color:#0000ff\" class=\"tadv-color\">\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306f\u7b2c 3 \u4f4d\u307e\u3067<\/span><\/strong>\u3092\u51fa\u529b\uff09\uff0e\u3053\u306e\u554f\u984c\u3067\u306f\uff0c<kbd>x<\/kbd> \u306f 0 \u3067\u306a\u3044\u3068\u4eee\u5b9a\u3057\u3066\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u3063\u3066\u3088\u3044\uff0e<br>\u305f\u3060\u3057\uff0c<span style=\"background-color:#ffeb00\" class=\"tadv-background-color\"><strong>\u95a2\u6570 <kbd>main<\/kbd> \u306e\u5185\u5bb9\u306f\u4e00\u5207\u66f8\u304d\u63db\u3048\u306a\u3044<\/strong><\/span>\u3053\u3068\uff0e <br><br>\u3010\u6ce8\u610f\u3011C \u8a00\u8a9e\u3067\u306f\u5b9f\u6570\u306e\u7d76\u5bfe\u5024\u3092\u6c42\u3081\u3066\u304f\u308c\u308b <kbd>fabs<\/kbd> \u3068\u3044\u3046\u95a2\u6570\u304c\u3042\u3089\u304b\u3058\u3081\u7528\u610f\u3055\u308c\u3066\u3044\u308b\uff08\u30cd\u30c3\u30c8\u3092\u691c\u7d22\u3059\u308c\u3070\u51fa\u3066\u304f\u308b\uff09\u304c\uff0c\u305d\u308c\u3092\u4f7f\u3063\u3066\u306f\u3044\u3051\u307e\u305b\u3093\uff0e<\/p>\n\n\n\n<p class=\"hint wp-block-paragraph\"><strong>\u3010\u30d2\u30f3\u30c8\u3011<\/strong><br>\u307e\u305a\uff0c\u6c42\u3081\u305f\u3044 <kbd><span class=\"tadv-color\" style=\"color:#0000ff\">|x-y|\/|x|<\/span> <\/kbd>\u3068\u3044\u3046\u5024\u306f\u6b21\u5f0f\u306e\u3088\u3046\u306b\u66f8\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a<br>\u3000\u3000\u3000\u3000<img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"43\" class=\"wp-image-5751\" style=\"width: 150px;\" src=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-content\/uploads\/sites\/2\/2022\/06\/ex0806-fig.png\" alt=\"\" srcset=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-content\/uploads\/sites\/2\/2022\/06\/ex0806-fig.png 354w, https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-content\/uploads\/sites\/2\/2022\/06\/ex0806-fig-300x86.png 300w, https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-content\/uploads\/sites\/2\/2022\/06\/ex0806-fig-350x102.png 350w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><br>\u3057\u305f\u304c\u3063\u3066\uff0c<span class=\"tadv-color\" style=\"color:#ff0000\">\u3044\u3063\u305f\u3093\u7d76\u5bfe\u5024\u3092\u8003\u3048\u305a\u306b <kbd>a = (x-y)\/x<\/kbd> \u3092\u6c42\u3081\u3066<\/span>\u304a\u3044\u3066\uff0c\u6700\u5f8c\u306b <span class=\"tadv-color\" style=\"color:#0000ff\"><kbd>|a|<\/kbd> \u3092\u51fa\u529b<\/span>\u3059\u308c\u3070\u3088\u3044\u3053\u3068\u306b\u306a\u308a\u307e\u3059\uff0e\u203b\u3053\u306e\u5834\u5408\uff0c<kbd>x<\/kbd>, <kbd>y<\/kbd> \u3068\u3082 double \u578b\u306a\u306e\u3067<strong><mark style=\"background-color:#ffd0fb\" class=\"has-inline-color\">\u30ad\u30e3\u30b9\u30c8\u306f\u4e0d\u8981<\/mark><\/strong>\u3067\u3059\uff0e<br><br>\u306a\u304a\uff0c<kbd>|a|<\/kbd> \u3092\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f\u8aac\u660e\u3059\u308b\u307e\u3067\u3082\u306a\u3044\u3068\u306f\u601d\u3044\u307e\u3059\u304c\uff0c<br><span class=\"tadv-color\" style=\"color:#ff0000\"><kbd>a &lt; 0<\/kbd> \u306a\u3089\u3070 <kbd>-a<\/kbd> \u3092<\/span>\uff0c<span class=\"tadv-color\" style=\"color:#0000ff\">\u3055\u3082\u306a\u304f\u3070\u5143\u306e <kbd>a<\/kbd> \u3092\u305d\u306e\u307e\u307e<\/span>\u51fa\u529b\u3059\u308c\u3070\u3088\u3044\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\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<br>\u51fa\u529b\u306e<mark style=\"background-color:#ffc2fa\" class=\"has-inline-color\">\u672b\u5c3e\u306b\u6539\u884c\uff08\\n\uff09\u3092\u5165\u308c\u5fd8\u308c\u306a\u3044<\/mark>\u3088\u3046\u6ce8\u610f\u305b\u3088<\/li>\n<\/ul>\n\n\n\n<pre class=\"example\" style=\"width: 300px; margin-top: -15pt; margin-bottom: 10px\">x \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">-10.2<\/span>\ny \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">-5.5<\/span>\n|x-y|\/|x| = 0.461<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: 300px; margin-top: -15pt; margin-bottom: 10px\">x \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">1<\/span>\ny \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">2<\/span>\n|x-y|\/|x| = 1.000<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: 300px; margin-top: -15pt; margin-bottom: 10px\">x \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">3.14<\/span>\ny \u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<span style=\"color:#ff0000\" class=\"has-inline-color\">0<\/span>\n|x-y|\/|x| = 1.000<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\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\uff09x \u3068 y \u3092\u9006\u306b\u3057\u3066\u8a08\u7b97\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b\uff0e<br> \u25a0 main \u95a2\u6570\u3092\u66f8\u304d\u63db\u3048\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<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\/ex08\/ex0805\/\">\u554f 5 (ex0805.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\/ex08\/ex0807\/\"> \u554f 7 (ex0807.c)<\/a> ]<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u554f 6\uff08\u63d0\u51fa\u30d7\u30ed\u30b0\u30e9\u30e0\u540d\uff1aex0806.c\uff09 \u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\uff08ex0806.c\uff09\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\uff0c\u305d\u306e\u4e2d\u306e\u95a2\u6570 print_relative_diff \u3092\u5b8c\u6210\u3055\u305b\u306a\u3055\u3044\uff0e\u95a2\u6570 print_relative_diff \u3067\u306f <a class=\"more-link\" href=\"https:\/\/se.cite.ehime-u.ac.jp\/jp\/lecture\/prog\/exercise\/ex08\/ex0806\/\">&#8230; more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1582,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5744","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/5744","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=5744"}],"version-history":[{"count":17,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/5744\/revisions"}],"predecessor-version":[{"id":11529,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/5744\/revisions\/11529"}],"up":[{"embeddable":true,"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/pages\/1582"}],"wp:attachment":[{"href":"https:\/\/se.cite.ehime-u.ac.jp\/jp\/wp-json\/wp\/v2\/media?parent=5744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}