{"author_url":"https://blog.hatena.ne.jp/ktrito33/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnmk365.hatenablog.jp%2Fentry%2Fclang-getenv\" title=\"C\u8a00\u8a9e: \u74b0\u5883\u5909\u6570\u3092\u53d6\u5f97\u3059\u308b | getenv() - \u6020\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"C\u8a00\u8a9e: \u74b0\u5883\u5909\u6570\u3092\u53d6\u5f97\u3059\u308b | getenv()","author_name":"ktrito33","blog_title":"\u6020\u65e5\u8a18","version":"1.0","width":"100%","blog_url":"https://nmk365.hatenablog.jp/","image_url":null,"type":"rich","description":"C\u8a00\u8a9e\u3067\u74b0\u5883\u5909\u6570\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f getenv() \u3092\u4f7f\u3046\u3002 \u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u74b0\u5883\u5909\u6570 TEMP \u306e\u5185\u5bb9\u3092\u51fa\u529b\u3059\u308b\u3002 #include <stdio.h> #include <stdlib.h> int main() { char *env_value; env_value = getenv(\"TEMP\"); if (env_value == NULL) { printf(\"There are no environment variables.\\n\"); return 1; } else { printf(\"value: %s\\n\", env_value); return 0; } } gete\u2026","provider_name":"Hatena Blog","url":"https://nmk365.hatenablog.jp/entry/clang-getenv","categories":["C\u8a00\u8a9e"],"published":"2025-05-01 23:48:09","provider_url":"https://hatena.blog","height":"190"}