{"width":"100%","provider_name":"Hatena Blog","height":"190","version":"1.0","author_name":"aa_debdeb","image_url":null,"type":"rich","description":"\u5c0f\u6570\u70b9\u7b2c\u4e00\u6841\u3067\u56db\u6368\u4e94\u5165\u3057\u305f\u3044\u5834\u5408\u306f\uff0c0.5\u3092\u8db3\u3057\u3066\u304b\u3089int\u578b\u306b\u5909\u63db\uff08\u5207\u308a\u4e0b\u3052\uff09\u3059\u308c\u3070\u3044\u3044\uff0e\u5c0f\u6570\u70b9\u7b2cn\u6841\u4ee5\u4e0b\u3067\u56db\u6368\u4e94\u5165\u3057\u305f\u3044\u5834\u5408\u306f\uff0c10n - 1\u500d\u3057\u3066\u304b\u3089\uff0c0.5\u3092\u8db3\u3057\u3066int\u578b\u306b\u5909\u63db\uff0e\u305d\u306e\u5f8c\uff0c10n - 1\u3067\u5272\u308a\u76f4\u3059\uff0e #include <cstdio> int main(){ float f1 = 5.4; printf(\"%f\\n\", float(int(f1 + 0.5))); // 5.000000 float f2 = 3.8; printf(\"%f\\n\", float(int(f2 + 0.5))); // 4.000000 float f3 = 2.63; printf(\"%\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Faa-debdeb.hatenablog.com%2Fentry%2F2015%2F12%2F25%2F185042\" title=\"C++\u3067\u56db\u6368\u4e94\u5165\u3059\u308b - \u6280\u8853\u7684\u306a\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://aa-debdeb.hatenablog.com/","title":"C++\u3067\u56db\u6368\u4e94\u5165\u3059\u308b","blog_title":"\u6280\u8853\u7684\u306a\u30e1\u30e2","published":"2015-12-25 18:50:42","categories":["C++"],"url":"https://aa-debdeb.hatenablog.com/entry/2015/12/25/185042","author_url":"https://blog.hatena.ne.jp/aa_debdeb/","provider_url":"https://hatena.blog"}