{"id":3384,"date":"2025-03-30T21:50:40","date_gmt":"2025-03-30T13:50:40","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3384"},"modified":"2025-03-30T21:50:40","modified_gmt":"2025-03-30T13:50:40","slug":"c-%e8%af%ad%e8%a8%80%e4%b8%ad%e7%9a%84%e5%88%a4%e6%96%ad%e8%af%ad%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/30\/c-%e8%af%ad%e8%a8%80%e4%b8%ad%e7%9a%84%e5%88%a4%e6%96%ad%e8%af%ad%e5%8f%a5\/","title":{"rendered":"C \u8bed\u8a00\u4e2d\u7684\u5224\u65ad\u8bed\u53e5"},"content":{"rendered":"\n<p>C \u8bed\u8a00\u63d0\u4f9b\u4e86\u51e0\u79cd\u5e38\u7528\u7684\u5224\u65ad\u8bed\u53e5\uff0c\u4e3b\u8981\u7528\u4e8e\u6839\u636e\u6761\u4ef6\u5224\u65ad\u7a0b\u5e8f\u7684\u6267\u884c\u8def\u5f84\u3002\u8fd9\u4e9b\u5224\u65ad\u8bed\u53e5\u5305\u62ec <code>if<\/code> \u8bed\u53e5\u3001<code>if-else<\/code> \u8bed\u53e5\u3001<code>else-if<\/code> \u8bed\u53e5\u3001<code>switch<\/code> \u8bed\u53e5\u7b49\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. <strong>if \u8bed\u53e5<\/strong><\/h2>\n\n\n\n<p><code>if<\/code> \u8bed\u53e5\u6839\u636e\u7ed9\u5b9a\u7684\u6761\u4ef6\u5224\u65ad\u662f\u5426\u6267\u884c\u67d0\u4e00\u4ee3\u7801\u5757\u3002\u5f53\u6761\u4ef6\u4e3a\u771f\uff08\u975e\u96f6\uff09\u65f6\uff0c\u6267\u884c <code>if<\/code> \u8bed\u53e5\u5757\u4e2d\u7684\u4ee3\u7801\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if (condition) {\n    \/\/ \u5f53\u6761\u4ef6\u4e3a\u771f\u65f6\u6267\u884c\u7684\u4ee3\u7801\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n\nint main() {\n    int a = 10;\n    if (a &gt; 5) {\n        printf(\"a \u5927\u4e8e 5\\n\");\n    }\n    return 0;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. <strong>if-else \u8bed\u53e5<\/strong><\/h2>\n\n\n\n<p><code>if-else<\/code> \u8bed\u53e5\u662f\u5728\u6761\u4ef6\u4e3a\u5047\uff08\u96f6\uff09\u65f6\u6267\u884c <code>else<\/code> \u90e8\u5206\u7684\u4ee3\u7801\u5757\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if (condition) {\n    \/\/ \u5f53\u6761\u4ef6\u4e3a\u771f\u65f6\u6267\u884c\u7684\u4ee3\u7801\n} else {\n    \/\/ \u5f53\u6761\u4ef6\u4e3a\u5047\u65f6\u6267\u884c\u7684\u4ee3\u7801\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n\nint main() {\n    int a = 3;\n    if (a &gt; 5) {\n        printf(\"a \u5927\u4e8e 5\\n\");\n    } else {\n        printf(\"a \u5c0f\u4e8e\u7b49\u4e8e 5\\n\");\n    }\n    return 0;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. <strong>if-else if-else \u8bed\u53e5<\/strong><\/h2>\n\n\n\n<p><code>if-else if-else<\/code> \u8bed\u53e5\u7528\u4e8e\u68c0\u67e5\u591a\u4e2a\u6761\u4ef6\uff0c\u9010\u4e2a\u6761\u4ef6\u8fdb\u884c\u5224\u65ad\uff0c\u76f4\u5230\u627e\u5230\u4e3a\u771f\u7684\u6761\u4ef6\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if (condition1) {\n    \/\/ \u5982\u679c\u6761\u4ef61\u4e3a\u771f\uff0c\u6267\u884c\u6b64\u4ee3\u7801\n} else if (condition2) {\n    \/\/ \u5982\u679c\u6761\u4ef62\u4e3a\u771f\uff0c\u6267\u884c\u6b64\u4ee3\u7801\n} else {\n    \/\/ \u5982\u679c\u6ca1\u6709\u6761\u4ef6\u4e3a\u771f\uff0c\u6267\u884c\u6b64\u4ee3\u7801\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n\nint main() {\n    int a = 5;\n    if (a &gt; 10) {\n        printf(\"a \u5927\u4e8e 10\\n\");\n    } else if (a == 5) {\n        printf(\"a \u7b49\u4e8e 5\\n\");\n    } else {\n        printf(\"a \u5c0f\u4e8e 5\\n\");\n    }\n    return 0;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. <strong>switch \u8bed\u53e5<\/strong><\/h2>\n\n\n\n<p><code>switch<\/code> \u8bed\u53e5\u7528\u4e8e\u6839\u636e\u53d8\u91cf\u7684\u4e0d\u540c\u503c\u6267\u884c\u4e0d\u540c\u7684\u4ee3\u7801\u5757\u3002\u5b83\u662f\u591a\u4e2a <code>if-else<\/code> \u8bed\u53e5\u7684\u66ff\u4ee3\uff0c\u901a\u5e38\u7528\u4e8e\u68c0\u67e5\u67d0\u4e2a\u53d8\u91cf\u7684\u591a\u4e2a\u53ef\u80fd\u503c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>switch (variable) {\n    case value1:\n        \/\/ \u5982\u679c\u53d8\u91cf\u7b49\u4e8e value1 \u6267\u884c\u7684\u4ee3\u7801\n        break;\n    case value2:\n        \/\/ \u5982\u679c\u53d8\u91cf\u7b49\u4e8e value2 \u6267\u884c\u7684\u4ee3\u7801\n        break;\n    default:\n        \/\/ \u5982\u679c\u6ca1\u6709\u5339\u914d\u5230\u4efb\u4f55\u503c\u65f6\u6267\u884c\u7684\u4ee3\u7801\n        break;\n}<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>case<\/code> \u540e\u9762\u7684\u503c\u53ef\u4ee5\u662f\u5e38\u91cf\u3002<\/li>\n\n\n\n<li><code>break<\/code> \u7528\u4e8e\u8df3\u51fa <code>switch<\/code> \u8bed\u53e5\u5757\u3002\u5982\u679c\u6ca1\u6709 <code>break<\/code>\uff0c\u4f1a\u7ee7\u7eed\u6267\u884c\u4e0b\u9762\u7684 <code>case<\/code> \u4ee3\u7801\uff08\u5373\u6240\u8c13\u7684 &#8220;fall-through&#8221;\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n\nint main() {\n    int a = 2;\n    switch (a) {\n        case 1:\n            printf(\"a \u7b49\u4e8e 1\\n\");\n            break;\n        case 2:\n            printf(\"a \u7b49\u4e8e 2\\n\");\n            break;\n        case 3:\n            printf(\"a \u7b49\u4e8e 3\\n\");\n            break;\n        default:\n            printf(\"a \u7684\u503c\u4e0d\u5728 1, 2, 3 \u4e4b\u95f4\\n\");\n            break;\n    }\n    return 0;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u603b\u7ed3<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>if<\/code> \u8bed\u53e5\u7528\u4e8e\u6839\u636e\u6761\u4ef6\u6267\u884c\u7279\u5b9a\u4ee3\u7801\u3002<\/li>\n\n\n\n<li><code>if-else<\/code> \u8bed\u53e5\u7528\u4e8e\u6761\u4ef6\u4e3a\u5047\u65f6\u6267\u884c\u53e6\u4e00\u4e2a\u4ee3\u7801\u5757\u3002<\/li>\n\n\n\n<li><code>if-else if-else<\/code> \u7528\u4e8e\u591a\u4e2a\u6761\u4ef6\u7684\u5224\u65ad\u3002<\/li>\n\n\n\n<li><code>switch<\/code> \u8bed\u53e5\u7528\u4e8e\u68c0\u67e5\u4e00\u4e2a\u53d8\u91cf\u7684\u591a\u4e2a\u53ef\u80fd\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4e9b\u6761\u4ef6\u5224\u65ad\u7ed3\u6784\u662f C \u8bed\u8a00\u4e2d\u6700\u5e38\u7528\u7684\u63a7\u5236\u7ed3\u6784\uff0c\u80fd\u591f\u5e2e\u52a9\u7a0b\u5e8f\u6839\u636e\u4e0d\u540c\u7684\u60c5\u51b5\u6267\u884c\u4e0d\u540c\u7684\u64cd\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C \u8bed\u8a00\u63d0\u4f9b\u4e86\u51e0\u79cd\u5e38\u7528\u7684\u5224\u65ad\u8bed\u53e5\uff0c\u4e3b\u8981\u7528\u4e8e\u6839\u636e\u6761\u4ef6\u5224\u65ad\u7a0b\u5e8f\u7684\u6267\u884c\u8def\u5f84\u3002\u8fd9\u4e9b\u5224\u65ad\u8bed\u53e5\u5305\u62ec if \u8bed\u53e5\u3001if-el [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3385,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82],"tags":[],"class_list":["post-3384","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-c"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3384"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3384\/revisions"}],"predecessor-version":[{"id":3386,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3384\/revisions\/3386"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3385"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}