{"id":90441,"date":"2024-03-21T12:29:51","date_gmt":"2024-03-21T03:29:51","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aestring%e3%81%a8stringstream%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9\/"},"modified":"2024-03-27T10:56:30","modified_gmt":"2024-03-27T01:56:30","slug":"c%e3%81%aestring%e3%81%a8stringstream%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%aestring%e3%81%a8stringstream%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9\/","title":{"rendered":"C++\u306estring\u3068stringstream\u306e\u4f7f\u3044\u65b9"},"content":{"rendered":"<p>C++\u3067\u306f\u3001\u6587\u5b57\u5217\u306fstring\u3084stringstream\u3067\u6271\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u3053\u306e\u88fd\u54c1\u306f\u975e\u5e38\u306b\u4f7f\u3044\u3084\u3059\u304f\u3001\u8ab0\u3067\u3082\u7c21\u5358\u306b\u64cd\u4f5c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;iostream&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;string&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n    std::string str = <span class=\"hljs-string\">\"Hello, World!\"<\/span>;\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u5b57\u7b26\u4e32\u957f\u5ea6<\/span>\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"Length: \"<\/span> &lt;&lt; str.<span class=\"hljs-built_in\">length<\/span>() &lt;&lt; std::endl;\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u5b50\u5b57\u7b26\u4e32<\/span>\r\n    std::string subStr = str.<span class=\"hljs-built_in\">substr<\/span>(<span class=\"hljs-number\">0<\/span>, <span class=\"hljs-number\">5<\/span>);\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"Substring: \"<\/span> &lt;&lt; subStr &lt;&lt; std::endl;\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u8fde\u63a5\u5b57\u7b26\u4e32<\/span>\r\n    std::string concatStr = str + <span class=\"hljs-string\">\" Welcome!\"<\/span>;\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"Concatenated string: \"<\/span> &lt;&lt; concatStr &lt;&lt; std::endl;\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u67e5\u627e\u5b57\u7b26\u4e32<\/span>\r\n    std::<span class=\"hljs-type\">size_t<\/span> found = str.<span class=\"hljs-built_in\">find<\/span>(<span class=\"hljs-string\">\"World\"<\/span>);\r\n    <span class=\"hljs-keyword\">if<\/span> (found != std::string::npos) {\r\n        std::cout &lt;&lt; <span class=\"hljs-string\">\"Found at index: \"<\/span> &lt;&lt; found &lt;&lt; std::endl;\r\n    } <span class=\"hljs-keyword\">else<\/span> {\r\n        std::cout &lt;&lt; <span class=\"hljs-string\">\"Not found\"<\/span> &lt;&lt; std::endl;\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u5165\u529b<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;iostream&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;sstream&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n    std::string str = <span class=\"hljs-string\">\"42 3.14 Hello\"<\/span>;\r\n\r\n    <span class=\"hljs-function\">std::istringstream <span class=\"hljs-title\">iss<\/span><span class=\"hljs-params\">(str)<\/span><\/span>; <span class=\"hljs-comment\">\/\/ \u4ece\u5b57\u7b26\u4e32\u521b\u5efa\u8f93\u5165\u6d41<\/span>\r\n    <span class=\"hljs-type\">int<\/span> num;\r\n    <span class=\"hljs-type\">float<\/span> fNum;\r\n    std::string word;\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u4ece\u6d41\u4e2d\u63d0\u53d6\u6570\u636e<\/span>\r\n    iss &gt;&gt; num &gt;&gt; fNum &gt;&gt; word;\r\n\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"Number: \"<\/span> &lt;&lt; num &lt;&lt; std::endl;\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"Float Number: \"<\/span> &lt;&lt; fNum &lt;&lt; std::endl;\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"Word: \"<\/span> &lt;&lt; word &lt;&lt; std::endl;\r\n\r\n    std::ostringstream oss; <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u8f93\u51fa\u6d41<\/span>\r\n    oss &lt;&lt; <span class=\"hljs-string\">\"Concatenated: \"<\/span> &lt;&lt; num &lt;&lt; <span class=\"hljs-string\">\" \"<\/span> &lt;&lt; fNum &lt;&lt; <span class=\"hljs-string\">\" \"<\/span> &lt;&lt; word;\r\n\r\n    std::cout &lt;&lt; oss.<span class=\"hljs-built_in\">str<\/span>() &lt;&lt; std::endl; <span class=\"hljs-comment\">\/\/ \u8f93\u51fa\u6d41\u4e2d\u7684\u5b57\u7b26\u4e32<\/span>\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>\u3053\u308c\u3089\u306f\u7c21\u5358\u306a\u4f8b\u3067\u3059\u3002string\u3068stringstream\u30af\u30e9\u30b9\u306b\u306f\u3055\u3089\u306b\u591a\u304f\u306e\u6a5f\u80fd\u3068\u4f7f\u7528\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u8981\u4ef6\u306b\u5fdc\u3058\u3066C++\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53c2\u7167\u3057\u3066\u3001\u8a73\u7d30\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C++\u3067\u306f\u3001\u6587\u5b57\u5217\u306fstring\u3084stringstream\u3067\u6271\u3044\u307e\u3059\u3002 \u3053\u306e\u88fd\u54c1\u306f\u975e\u5e38\u306b\u4f7f\u3044\u3084\u3059\u304f\u3001\u8ab0\u3067\u3082\u7c21\u5358\u306b\u64cd\u4f5c\u3067\u304d\u307e\u3059\u3002 #include &lt;iostream&gt; #include &lt;string&#038; [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-90441","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C++\u306estring\u3068stringstream\u306e\u4f7f\u3044\u65b9 - Blog - Silicon Cloud<\/title>\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\u306estring\u3068stringstream\u306e\u4f7f\u3044\u65b9\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C++\u306estring\u3068stringstream\u306e\u4f7f\u3044\u65b9\" \/>\n<meta property=\"og:description\" content=\"C++\u3067\u306f\u3001\u6587\u5b57\u5217\u306fstring\u3084stringstream\u3067\u6271\u3044\u307e\u3059\u3002 \u3053\u306e\u88fd\u54c1\u306f\u975e\u5e38\u306b\u4f7f\u3044\u3084\u3059\u304f\u3001\u8ab0\u3067\u3082\u7c21\u5358\u306b\u64cd\u4f5c\u3067\u304d\u307e\u3059\u3002 #include &lt;iostream&gt; 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