{"id":198419,"date":"2024-11-14T18:14:51","date_gmt":"2024-11-14T10:14:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/198419\/"},"modified":"2024-11-14T18:14:51","modified_gmt":"2024-11-14T10:14:51","slug":"%e3%80%8clinux-c%e4%bb%a3%e7%a2%bc%e7%94%9f%e6%88%90%e9%9a%a8%e6%a9%9f%e6%95%b8%ef%bc%8c%e6%8f%90%e9%ab%98%e7%a8%8b%e5%ba%8f%e5%81%a5%e5%a3%af%e6%80%a7%e3%80%8d-linux-c-%e7%94%a2%e7%94%9f%e9%9a%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/198419\/","title":{"rendered":"\u300cLinux C\u4ee3\u78bc\u751f\u6210\u96a8\u6a5f\u6578\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u5065\u58ef\u6027\u300d (linux c \u7522\u751f\u96a8\u6a5f\u6578)"},"content":{"rendered":"<h1 id=\"linux-c%e4%bb%a3%e7%a2%bc%e7%94%9f%e6%88%90%e9%9a%a8%e6%a9%9f%e6%95%b8%ef%bc%8c%e6%8f%90%e9%ab%98%e7%a8%8b%e5%ba%8f%e5%81%a5%e5%a3%af%e6%80%a7-MhjpoGBbmh\">Linux C\u4ee3\u78bc\u751f\u6210\u96a8\u6a5f\u6578\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u5065\u58ef\u6027<\/h1>\n<p>\u5728\u73fe\u4ee3\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u96a8\u6a5f\u6578\u7684\u751f\u6210\u662f\u8a31\u591a\u61c9\u7528\u7a0b\u5e8f\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u7121\u8ad6\u662f\u7528\u65bc\u52a0\u5bc6\u3001\u6a21\u64ec\u9084\u662f\u96a8\u6a5f\u62bd\u6a23\uff0c\u96a8\u6a5f\u6578\u7684\u8cea\u91cf\u76f4\u63a5\u5f71\u97ff\u5230\u7a0b\u5e8f\u7684\u5065\u58ef\u6027\u548c\u5b89\u5168\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Linux\u74b0\u5883\u4e0b\u4f7f\u7528C\u8a9e\u8a00\u751f\u6210\u96a8\u6a5f\u6578\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e9%9a%a8%e6%a9%9f%e6%95%b8%e7%9a%84%e9%a1%9e%e5%9e%8b-MhjpoGBbmh\">\u96a8\u6a5f\u6578\u7684\u985e\u578b<\/h2>\n<p>\u5728C\u8a9e\u8a00\u4e2d\uff0c\u96a8\u6a5f\u6578\u4e3b\u8981\u6709\u5169\u7a2e\u985e\u578b\uff1a\u507d\u96a8\u6a5f\u6578\u548c\u771f\u96a8\u6a5f\u6578\u3002<\/p>\n<ul>\n<li><strong>\u507d\u96a8\u6a5f\u6578\uff1a<\/strong>\u9019\u4e9b\u6578\u5b57\u662f\u901a\u904e\u7b97\u6cd5\u751f\u6210\u7684\uff0c\u96d6\u7136\u5b83\u5011\u770b\u8d77\u4f86\u662f\u96a8\u6a5f\u7684\uff0c\u4f46\u5be6\u969b\u4e0a\u662f\u53ef\u9810\u6e2c\u7684\u3002C\u8a9e\u8a00\u4e2d\u7684\u6a19\u6e96\u5eab\u51fd\u6578\u5982 <code>rand()<\/code> \u548c <code>srand()<\/code> \u5c31\u662f\u7528\u4f86\u751f\u6210\u507d\u96a8\u6a5f\u6578\u7684\u3002<\/li>\n<li><strong>\u771f\u96a8\u6a5f\u6578\uff1a<\/strong>\u9019\u4e9b\u6578\u5b57\u662f\u57fa\u65bc\u7269\u7406\u73fe\u8c61\u751f\u6210\u7684\uff0c\u901a\u5e38\u4f7f\u7528\u786c\u4ef6\u8a2d\u5099\u4f86\u7372\u53d6\u3002Linux\u7cfb\u7d71\u63d0\u4f9b\u4e86 <code>\/dev\/random<\/code> \u548c <code>\/dev\/urandom<\/code> \u9019\u5169\u500b\u8a2d\u5099\u6587\u4ef6\u4f86\u751f\u6210\u771f\u96a8\u6a5f\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8c%e8%aa%9e%e8%a8%80%e7%94%9f%e6%88%90%e5%81%bd%e9%9a%a8%e6%a9%9f%e6%95%b8-MhjpoGBbmh\">\u4f7f\u7528C\u8a9e\u8a00\u751f\u6210\u507d\u96a8\u6a5f\u6578<\/h2>\n<p>\u5728C\u8a9e\u8a00\u4e2d\uff0c\u751f\u6210\u507d\u96a8\u6a5f\u6578\u7684\u57fa\u672c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;time.h&gt;\n\nint main() {\n    \/\/ \u8a2d\u7f6e\u96a8\u6a5f\u6578\u7a2e\u5b50\n    srand(time(NULL));\n\n    \/\/ \u751f\u6210\u96a8\u6a5f\u6578\n    for (int i = 0; i &lt; 10; i++) {\n        int random_number = rand() % 100; \/\/ \u751f\u62100\u523099\u4e4b\u9593\u7684\u96a8\u6a5f\u6578\n        printf(\"%dn\", random_number);\n    }\n\n    return 0;\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>srand()<\/code> \u51fd\u6578\u8a2d\u7f6e\u96a8\u6a5f\u6578\u7684\u7a2e\u5b50\uff0c\u9019\u6a23\u6bcf\u6b21\u904b\u884c\u7a0b\u5e8f\u6642\u90fd\u80fd\u751f\u6210\u4e0d\u540c\u7684\u96a8\u6a5f\u6578\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 <code>rand()<\/code> \u51fd\u6578\u751f\u6210\u96a8\u6a5f\u6578\uff0c\u4e26\u901a\u904e\u53d6\u6a21\u904b\u7b97\u9650\u5236\u5176\u7bc4\u570d\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8c%e8%aa%9e%e8%a8%80%e7%94%9f%e6%88%90%e7%9c%9f%e9%9a%a8%e6%a9%9f%e6%95%b8-MhjpoGBbmh\">\u4f7f\u7528C\u8a9e\u8a00\u751f\u6210\u771f\u96a8\u6a5f\u6578<\/h2>\n<p>\u5982\u679c\u9700\u8981\u66f4\u9ad8\u8cea\u91cf\u7684\u96a8\u6a5f\u6578\uff0c\u53ef\u4ee5\u4f7f\u7528Linux\u63d0\u4f9b\u7684\u771f\u96a8\u6a5f\u6578\u751f\u6210\u5668\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5f9e <code>\/dev\/urandom<\/code> \u8b80\u53d6\u96a8\u6a5f\u6578\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;fcntl.h&gt;\n#include &lt;unistd.h&gt;\n\nint main() {\n    int fd = open(\"\/dev\/urandom\", O_RDONLY);\n    if (fd == -1) {\n        perror(\"open\");\n        return 1;\n    }\n\n    unsigned int random_number;\n    read(fd, &amp;random_number, sizeof(random_number));\n    close(fd);\n\n    printf(\"\u96a8\u6a5f\u6578: %un\", random_number);\n    return 0;\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u6253\u958b <code>\/dev\/urandom<\/code> \u6587\u4ef6\uff0c\u7136\u5f8c\u8b80\u53d6\u96a8\u6a5f\u6578\u3002\u9019\u7a2e\u65b9\u6cd5\u751f\u6210\u7684\u96a8\u6a5f\u6578\u8cea\u91cf\u66f4\u9ad8\uff0c\u9069\u5408\u7528\u65bc\u5b89\u5168\u6027\u8981\u6c42\u8f03\u9ad8\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e6%8f%90%e9%ab%98%e7%a8%8b%e5%ba%8f%e5%81%a5%e5%a3%af%e6%80%a7-MhjpoGBbmh\">\u63d0\u9ad8\u7a0b\u5e8f\u5065\u58ef\u6027<\/h2>\n<p>\u751f\u6210\u96a8\u6a5f\u6578\u7684\u8cea\u91cf\u5c0d\u65bc\u7a0b\u5e8f\u7684\u5065\u58ef\u6027\u81f3\u95dc\u91cd\u8981\u3002\u4f7f\u7528\u507d\u96a8\u6a5f\u6578\u6642\uff0c\u5fc5\u9808\u78ba\u4fdd\u7a2e\u5b50\u7684\u96a8\u6a5f\u6027\uff0c\u4ee5\u907f\u514d\u751f\u6210\u53ef\u9810\u6e2c\u7684\u6578\u5b57\u3002\u800c\u4f7f\u7528\u771f\u96a8\u6a5f\u6578\u5247\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u9019\u4e00\u98a8\u96aa\u3002\u6b64\u5916\uff0c\u5c0d\u65bc\u9700\u8981\u591a\u6b21\u751f\u6210\u96a8\u6a5f\u6578\u7684\u61c9\u7528\uff0c\u5efa\u8b70\u4f7f\u7528\u52a0\u5bc6\u5b89\u5168\u7684\u96a8\u6a5f\u6578\u751f\u6210\u5668\uff0c\u5982 <code>getrandom()<\/code> \u51fd\u6578\uff0c\u9019\u6a23\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u9ad8\u5b89\u5168\u6027\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-MhjpoGBbmh\">\u7e3d\u7d50<\/h2>\n<p>\u5728Linux\u74b0\u5883\u4e0b\uff0c\u4f7f\u7528C\u8a9e\u8a00\u751f\u6210\u96a8\u6a5f\u6578\u662f\u4e00\u500b\u91cd\u8981\u7684\u6280\u80fd\uff0c\u7121\u8ad6\u662f\u70ba\u4e86\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ef\u6027\u9084\u662f\u6eff\u8db3\u5b89\u5168\u9700\u6c42\u3002\u901a\u904e\u4f7f\u7528\u6a19\u6e96\u5eab\u51fd\u6578\u548cLinux\u7684\u96a8\u6a5f\u6578\u8a2d\u5099\u6587\u4ef6\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9748\u6d3b\u5730\u751f\u6210\u6240\u9700\u7684\u96a8\u6a5f\u6578\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u5b89\u5168\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u771f\u96a8\u6a5f\u6578\u751f\u6210\u5668\u662f\u660e\u667a\u7684\u9078\u64c7\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728Linux C\u4e2d\u751f\u6210\u96a8\u6a5f\u6578\uff0c\u4ee5\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ef\u6027\u548c\u5b89\u5168\u6027\uff0c\u78ba\u4fdd\u66f4\u53ef\u9760\u7684\u61c9\u7528\u7a0b\u5f0f\u904b\u884c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-198419","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/198419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=198419"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/198419\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=198419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=198419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=198419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}