{"id":74819,"date":"2024-03-20T14:55:34","date_gmt":"2024-03-20T05:55:34","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-11T09:10:10","modified_gmt":"2025-08-11T00:10:10","slug":"c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/","title":{"rendered":"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9"},"content":{"rendered":"

C++\u306ememcpy\u95a2\u6570\u306f\u3001\u3042\u308b\u30e1\u30e2\u30ea\u306e\u9818\u57df\u306b\u3042\u308b\u5185\u5bb9\u3092\u5225\u306e\u30e1\u30e2\u30ea\u306e\u9818\u57df\u306b\u30b3\u30d4\u30fc\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002memcpy\u95a2\u6570\u306e\u5f62\u5f0f\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n

void<\/span>* memcpy<\/span>(void<\/span>* dest, const<\/span> void<\/span>* src, size_t<\/span> count)<\/span><\/span>;\r\n<\/code><\/pre>\n
\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u89e3\u91c8<\/p>\n
    \n
  1. \u66f8\u304d\u8fbc\u307f\u5148\u306e\u5148\u982d\u30e1\u30e2\u30ea\u30fc\u30a2\u30c9\u30ec\u30b9\u3002\u3064\u307e\u308a\u3001\u30c7\u30fc\u30bf\u3092\u30b3\u30d4\u30fc\u3059\u308b\u5834\u6240\u3002<\/li>\n
  2. \u30b3\u30d4\u30fc\u3059\u308b\u30c7\u30fc\u30bf\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u3001\u5143\u306e\u30e1\u30e2\u30ea\u306e\u958b\u59cb\u30a2\u30c9\u30ec\u30b9\u3002<\/li>\n
  3. \u30b3\u30d4\u30fc\u3059\u308b\u30d0\u30a4\u30c8\u6570\u3002<\/li>\n<\/ol>\n
    memcpy\u95a2\u6570\u306e\u623b\u308a\u5024\u306fvoid*\u578b\u3067\u3001\u5b9b\u5148\u30e1\u30e2\u30ea\u306e\u5148\u982d\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n
    \u3053\u3061\u3089\u304c memcpy \u95a2\u6570\u306e\u5229\u7528\u4f8b\u3067\u3059<\/p>\n
    #include<\/span> <iostream><\/span><\/span>\r\n#include<\/span> <cstring><\/span><\/span>\r\n\r\nint<\/span> main<\/span>()<\/span> <\/span>{\r\n    char<\/span> src[] = \"Hello, World!\"<\/span>;\r\n    char<\/span> dest[20<\/span>];\r\n\r\n    std::memcpy<\/span>(dest, src, sizeof<\/span>(src));\r\n\r\n    std::cout << \"src: \"<\/span> << src << std::endl;\r\n    std::cout << \"dest: \"<\/span> << dest << std::endl;\r\n\r\n    return<\/span> 0<\/span>;\r\n}\r\n<\/code><\/pre>\n
    \u5f7c\u304c\u304b\u3064\u3066\u306f\u66b4\u308c\u3093\u574a\u3060\u3063\u305f\u3053\u3068\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
    src: Hello, World!\r\ndest: Hello, World!\r\n<\/code><\/pre>\n
    \u30b5\u30f3\u30d7\u30eb\u3067\u306f\u307e\u305a\u3001\u30bd\u30fc\u30b9\u30e1\u30e2\u30easrc\u3092\u5b9a\u7fa9\u3057\u3001\u6587\u5b57\u5217”Hello, World!”\u3067\u521d\u671f\u5316\u3057\u3066\u3044\u307e\u3059\u3002\u6b21\u306b\u300120\u30d0\u30a4\u30c8\u9577\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u30e1\u30e2\u30eadest\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u3057\u3066\u3001memcpy\u95a2\u6570\u306f\u3001src\u306e\u4e2d\u8eab\u3092dest\u3078\u30b3\u30d4\u30fc\u3057\u3066\u3044\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001src\u3068dest\u306e\u4e2d\u8eab\u3092\u30d7\u30ea\u30f3\u30c8\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3069\u3061\u3089\u3082\u540c\u3058\u5185\u5bb9\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    C++\u306ememcpy\u95a2\u6570\u306f\u3001\u3042\u308b\u30e1\u30e2\u30ea\u306e\u9818\u57df\u306b\u3042\u308b\u5185\u5bb9\u3092\u5225\u306e\u30e1\u30e2\u30ea\u306e\u9818\u57df\u306b\u30b3\u30d4\u30fc\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002memcpy\u95a2\u6570\u306e\u5f62\u5f0f\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 void* memcpy(void* dest, const void* s […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[16,26],"class_list":["post-74819","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-16","tag-26"],"yoast_head":"\nC++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/c\u306ememcpy\u95a2\u6570\u306e\u4f7f\u7528\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9\" \/>\n<meta property=\"og:description\" content=\"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/c\u306ememcpy\u95a2\u6570\u306e\u4f7f\u7528\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-20T05:55:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-11T00:10:10+00:00\" \/>\n<meta name=\"author\" content=\"\u6d77\u6597, \u8475\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6d77\u6597, \u8475\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"2\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/\",\"name\":\"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9 - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\"},\"datePublished\":\"2024-03-20T05:55:34+00:00\",\"dateModified\":\"2025-08-11T00:10:10+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/20cfc053626f4d45c0fa7a4e7964b5b6\"},\"description\":\"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/ja\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"ja\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/20cfc053626f4d45c0fa7a4e7964b5b6\",\"name\":\"\u6d77\u6597, \u8475\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/25aec9a18954b6bfb7e4f7219c2923d62c6f0c9f4d5c0171228fe41751c0ab7a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/25aec9a18954b6bfb7e4f7219c2923d62c6f0c9f4d5c0171228fe41751c0ab7a?s=96&d=mm&r=g\",\"caption\":\"\u6d77\u6597, \u8475\"},\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/author\/kaitoaoi\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9 - Blog - Silicon Cloud","description":"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/ja\/blog\/c\u306ememcpy\u95a2\u6570\u306e\u4f7f\u7528\u65b9\u6cd5\/","og_locale":"ja_JP","og_type":"article","og_title":"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9","og_description":"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","og_url":"https:\/\/www.silicloud.com\/ja\/blog\/c\u306ememcpy\u95a2\u6570\u306e\u4f7f\u7528\u65b9\u6cd5\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2024-03-20T05:55:34+00:00","article_modified_time":"2025-08-11T00:10:10+00:00","author":"\u6d77\u6597, \u8475","twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"\u6d77\u6597, \u8475","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"2\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/","url":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/","name":"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9 - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website"},"datePublished":"2024-03-20T05:55:34+00:00","dateModified":"2025-08-11T00:10:10+00:00","author":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/20cfc053626f4d45c0fa7a4e7964b5b6"},"description":"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/ja\/blog\/"},{"@type":"ListItem","position":2,"name":"C++\u306ememcpy\u95a2\u6570\u306e\u4f7f\u3044\u65b9"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website","url":"https:\/\/www.silicloud.com\/ja\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"ja"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/20cfc053626f4d45c0fa7a4e7964b5b6","name":"\u6d77\u6597, \u8475","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/25aec9a18954b6bfb7e4f7219c2923d62c6f0c9f4d5c0171228fe41751c0ab7a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/25aec9a18954b6bfb7e4f7219c2923d62c6f0c9f4d5c0171228fe41751c0ab7a?s=96&d=mm&r=g","caption":"\u6d77\u6597, \u8475"},"url":"https:\/\/www.silicloud.com\/ja\/blog\/author\/kaitoaoi\/"},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aememcpy%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/74819","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/comments?post=74819"}],"version-history":[{"count":3,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/74819\/revisions"}],"predecessor-version":[{"id":331686,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/74819\/revisions\/331686"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/media?parent=74819"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/categories?post=74819"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/tags?post=74819"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}