![\"C\u8bed\u8a00\u4e2d\u7684\u7f16\u8bd1\u8fc7\u7a0b\u8be6\u89e3\"](\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2024\/02\/img-o12uDNhY2HKIlx3qDNiM6kOX.png?x-oss-process=image\/auto-orient,1\/format,webp\")
<\/p>\n<\/p>\n
\u5728C\u8bed\u8a00\u4e2d\uff0c\u7f16\u8bd1\u8fc7\u7a0b<\/strong>\u662f\u5c06\u9ad8\u7ea7\u8bed\u8a00\u4ee3\u7801\u8f6c\u6362\u6210\u53ef\u6267\u884c\u7a0b\u5e8f\u7684\u8fc7\u7a0b\uff0c\u4e3b\u8981\u5305\u62ec\u9884\u5904\u7406\u3001\u7f16\u8bd1\u3001\u6c47\u7f16\u3001\u4ee5\u53ca\u94fe\u63a5<\/strong>\u56db\u4e2a\u9636\u6bb5\u3002\u9996\u5148\uff0c\u9884\u5904\u7406\u5668\u6839\u636e\u6307\u4ee4\u5904\u7406\u6e90\u4ee3\u7801\uff0c\u5c55\u5f00\u5b8f\u3001\u5904\u7406\u6761\u4ef6\u7f16\u8bd1\u6307\u4ee4\u3001\u53bb\u9664\u6ce8\u91ca<\/strong>\u7b49\uff1b\u7f16\u8bd1\u9636\u6bb5\u5c06\u6e90\u4ee3\u7801\u7ffb\u8bd1\u6210\u6c47\u7f16\u4ee3\u7801\uff1b\u6c47\u7f16\u5668\u5c06\u6c47\u7f16\u4ee3\u7801\u8f6c\u6362\u4e3a\u673a\u5668\u8bed\u8a00\uff1b\u6700\u7ec8\uff0c\u94fe\u63a5\u5668\u8d1f\u8d23\u5c06\u7a0b\u5e8f\u7684\u5404\u4e2a\u90e8\u5206\u548c\u5fc5\u8981\u7684\u5e93\u6587\u4ef6\u7ec4\u5408\u8d77\u6765\uff0c\u751f\u6210\u6700\u7ec8\u7684\u53ef\u6267\u884c\u6587\u4ef6\u3002\u5176\u4e2d\uff0c\u9884\u5904\u7406<\/strong>\u662f\u57fa\u7840\u800c\u5fc5\u4e0d\u53ef\u5c11\u7684\u4e00\u6b65\uff0c\u5b83\u76f4\u63a5\u5f71\u54cd\u7740\u7f16\u8bd1\u5668\u5982\u4f55\u7406\u89e3\u6e90\u4ee3\u7801\u3002<\/p>\n \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63cf\u8ff0C\u8bed\u8a00\u7684\u7f16\u8bd1\u8fc7\u7a0b\u3002<\/p>\n \u9884\u5904\u7406\u662f\u7f16\u8bd1\u8fc7\u7a0b\u7684\u7b2c\u4e00\u6b65\uff0c\u5728\u8fd9\u4e00\u9636\u6bb5\uff0c\u9884\u5904\u7406\u5668\u63a5\u53d7\u6587\u672c\u6570\u636e\u4f5c\u4e3a\u8f93\u5165\uff0c\u5e76\u4ea7\u751f\u53e6\u4e00\u4efd\u6587\u672c\u6570\u636e\u4f5c\u4e3a\u8f93\u51fa\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u9884\u5904\u7406\u5668\u6267\u884c\u5982\u4e0b\u4efb\u52a1\uff1a\u5305\u62ec\u5c06\u6240\u6709\u7684`#define`\u5220\u9664\u5e76\u5c55\u5f00\u6240\u6709\u7684\u5b8f\u3001\u5904\u7406\u6240\u6709\u6761\u4ef6\u7f16\u8bd1\u6307\u4ee4\u5982`#if`\u3001`#elif`\u3001`#else`\u548c`#endif`\u3001\u5904\u7406`#include`\u6307\u4ee4\uff0c\u5c06\u88ab\u5305\u542b\u6587\u4ef6\u7684\u5185\u5bb9\u63d2\u5165\u5230\u6e90\u6587\u4ef6\u4e2d\u7684\u6307\u5b9a\u4f4d\u7f6e\u3001\u5220\u9664\u6240\u6709\u6ce8\u91ca\u4ee5\u53ca\u6dfb\u52a0\u884c\u53f7\u548c\u6587\u4ef6\u540d\u4fe1\u606f\uff0c\u4ee5\u4fbf\u5728\u7f16\u8bd1\u65f6\u7f16\u8bd1\u5668\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u4fe1\u606f\u6765\u663e\u793a\u8b66\u544a\u6216\u8005\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n \u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u4e86`#define PI 3.14`\uff0c\u9884\u5904\u7406\u5668\u5c31\u4f1a\u5728\u5b9e\u9645\u7f16\u8bd1\u524d\uff0c\u5c06\u6e90\u7801\u4e2d\u6240\u6709\u7684`PI`\u66ff\u6362\u6210`3.14`\u3002<\/p>\n \u7f16\u8bd1\u662f\u5c06\u9884\u5904\u7406\u5b8c\u7684\u6587\u4ef6\u8f6c\u5316\u4e3a\u6c47\u7f16\u6307\u4ee4\u3002\u7f16\u8bd1\u5668\u9996\u5148\u5c06\u6e90\u4ee3\u7801\u5206\u89e3\u6210\u4e00\u4e2a\u4e2a\u57fa\u672c\u7684\u5143\u7d20\uff0c\u8bf8\u5982\u53d8\u91cf\u540d\u3001\u5e38\u91cf\u3001\u5173\u952e\u5b57\u7b49\uff0c\u8fd9\u4e00\u8fc7\u7a0b\u79f0\u4e4b\u4e3a\u8bcd\u6cd5\u5206\u6790\u3002\u63a5\u7740\u8fdb\u884c\u8bed\u6cd5\u5206\u6790\uff0c\u8fd9\u91cc\u68c0\u67e5\u6e90\u4ee3\u7801\u7684\u7ed3\u6784\u6216\u8bed\u6cd5\u662f\u5426\u6b63\u786e\uff0c\u5e76\u6784\u5efa\u6240\u8c13\u7684\u62bd\u8c61\u8bed\u6cd5\u6811\uff08AST\uff09\uff0cAST\u662f\u6e90\u4ee3\u7801\u903b\u8f91\u7ed3\u6784\u7684\u4e00\u4e2a\u5c42\u7ea7\u6a21\u578b\u3002\u4e4b\u540e\u8fdb\u884c\u8bed\u4e49\u5206\u6790\uff0c\u68c0\u67e5\u6e90\u4ee3\u7801\u662f\u5426\u6709\u8bed\u4e49\u9519\u8bef\uff0c\u4f8b\u5982\u53d8\u91cf\u7c7b\u578b\u4e0d\u5339\u914d\u7b49\u3002\u7ecf\u8fc7\u8fd9\u6837\u7684\u5904\u7406\u540e\uff0c\u7f16\u8bd1\u5668\u5c06\u6e90\u4ee3\u7801\u7ffb\u8bd1\u6210\u6c47\u7f16\u8bed\u8a00\uff0c\u8fd9\u662f\u4e00\u79cd\u4f4e\u5c42\u6b21\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u66f4\u63a5\u8fd1\u4e8e\u673a\u5668\u8bed\u8a00\u3002<\/p>\n \u7f16\u8bd1\u9636\u6bb5\u7684\u4e00\u4e2a\u91cd\u8981\u4efb\u52a1\u662f\u4f18\u5316\u3002\u7f16\u8bd1\u5668\u5728\u751f\u6210\u6c47\u7f16\u4ee3\u7801\u65f6<\/strong>\uff0c\u4f1a\u5c1d\u8bd5\u4f18\u5316\u4ee3\u7801\u4ee5\u63d0\u9ad8\u6267\u884c\u901f\u5ea6\u548c\u51cf\u5c11\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u3002\u5982\u5faa\u73af\u4f18\u5316\u3001\u5bc4\u5b58\u5668\u5206\u914d\u7b49\u3002<\/p>\n \u6c47\u7f16\u9636\u6bb5\u662f\u5c06\u7f16\u8bd1\u540e\u751f\u6210\u7684\u6c47\u7f16\u4ee3\u7801\u8f6c\u6362\u4e3a\u673a\u5668\u7801\u3002\u6bcf\u4e00\u53e5\u6c47\u7f16\u6307\u4ee4\u51e0\u4e4e\u90fd\u5bf9\u5e94\u4e00\u6761\u673a\u5668\u8bed\u8a00\u6307\u4ee4\u3002\u6c47\u7f16\u5668\u8fdb\u884c\u8fd9\u9879\u5de5\u4f5c\u7684\u8fc7\u7a0b\u79f0\u4e4b\u4e3a\u6c47\u7f16\u3002\u6c47\u7f16\u540e\u751f\u6210\u7684\u662f\u76ee\u6807\u4ee3\u7801\u6587\u4ef6\uff0c\u8fd9\u4e9b\u6587\u4ef6\u662f\u7531\u591a\u6761\u673a\u5668\u6307\u4ee4\u7ec4\u6210\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u4f46\u662f\u5b83\u8fd8\u4e0d\u80fd\u76f4\u63a5\u5728\u8ba1\u7b97\u673a\u4e0a\u8fd0\u884c\uff0c\u56e0\u4e3a\u5b83\u53ef\u80fd\u8fd8\u9700\u8981\u4e0e\u5176\u4ed6\u7684\u76ee\u6807\u4ee3\u7801\u6587\u4ef6\u6216\u8005\u5e93\u6587\u4ef6\u94fe\u63a5\u5728\u4e00\u8d77\u3002<\/p>\n \u7531\u4e8e\u673a\u5668\u7801\u662f\u8ba1\u7b97\u673a\u786c\u4ef6\u6240\u80fd\u76f4\u63a5\u7406\u89e3\u7684\u8bed\u8a00\uff0c\u56e0\u6b64\uff0c\u6c47\u7f16\u8fc7\u7a0b\u5b9e\u9645\u4e0a\u5c31\u662f\u5c06\u7a0b\u5e8f\u5458\u53ef\u9605\u8bfb\u7684\u4ee3\u7801\u8f6c\u6362\u4e3a\u8ba1\u7b97\u673a\u53ef\u6267\u884c\u7684\u6307\u4ee4\u3002<\/p>\n \u6700\u540e\u7684\u9636\u6bb5\u662f\u94fe\u63a5\uff0c\u94fe\u63a5\u8fc7\u7a0b\u662f\u5c06\u4e00\u4e2a\u6216\u591a\u4e2a\u7531\u6c47\u7f16\u5668\u751f\u6210\u7684\u76ee\u6807\u4ee3\u7801\u6587\u4ef6\u4ee5\u53ca\u7a0b\u5e8f\u6240\u9700\u7684\u5e93\u6587\u4ef6\u6574\u5408\u6210\u6700\u7ec8\u7684\u53ef\u6267\u884c\u6587\u4ef6\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4e3b\u8981\u6d89\u53ca\u89e3\u6790\u7b26\u53f7\u5f15\u7528\u3001\u5730\u5740\u5206\u914d\u3001\u4ee5\u53ca\u91cd\u5b9a\u4f4d\u7b49\u5de5\u4f5c\u3002\u94fe\u63a5\u5668\u9996\u5148\u67e5\u770b\u6240\u6709\u76ee\u6807\u4ee3\u7801\u548c\u5e93\u6587\u4ef6\u4e2d\u7684\u7b26\u53f7\u5b9a\u4e49\uff0c\u5982\u51fd\u6570\u548c\u53d8\u91cf\uff0c\u5e76\u5efa\u7acb\u7b26\u53f7\u8868\u3002\u7136\u540e\u94fe\u63a5\u5668\u89e3\u6790\u6bcf\u4e00\u4e2a\u7b26\u53f7\u5f15\u7528\uff0c\u786e\u4fdd\u6bcf\u4e2a\u51fd\u6570\u8c03\u7528\u90fd\u6307\u5411\u6b63\u786e\u7684\u5185\u5b58\u5730\u5740\u3002<\/p>\n \u94fe\u63a5\u53ef\u4ee5\u662f\u9759\u6001\u94fe\u63a5\u6216\u52a8\u6001\u94fe\u63a5\uff0c\u9759\u6001\u94fe\u63a5\u751f\u6210\u7684\u53ef\u6267\u884c\u6587\u4ef6\u5305\u542b\u4e86\u7a0b\u5e8f\u8fd0\u884c\u6240\u9700\u7684\u5168\u90e8\u4ee3\u7801\uff0c\u5305\u62ec\u7a0b\u5e8f\u81ea\u8eab\u4ee3\u7801\u548c\u4f7f\u7528\u7684\u5e93\u4ee3\u7801\uff1b\u52a8\u6001\u94fe\u63a5\u5219\u662f\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u7531\u52a8\u6001\u94fe\u63a5\u5668\u52a0\u8f7d\u6240\u9700\u7684\u5171\u4eab\u5e93\u3002<\/p>\n C\u8bed\u8a00\u7684\u7f16\u8bd1\u8fc7\u7a0b\u662f\u6574\u4e2a\u7a0b\u5e8f\u4ece\u6e90\u4ee3\u7801\u5230\u53ef\u6267\u884c\u7a0b\u5e8f\u7684\u5173\u952e\u8def\u5f84\uff0c\u5b83\u5305\u62ec\u4e86\u591a\u4e2a\u5c42\u7ea7\u7684\u8f6c\u6362\u548c\u4f18\u5316\u3002\u7406\u89e3\u8fd9\u4e9b\u8fc7\u7a0b\u5bf9\u4e8e\u7a0b\u5e8f\u5458\u6765\u8bf4\u81f3\u5173\u91cd\u8981\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u5e2e\u52a9\u4ed6\u4eec\u66f4\u597d\u5730\u7f16\u5199\u4ee3\u7801\uff0c\u8fd8\u6709\u52a9\u4e8e\u5206\u6790\u548c\u89e3\u51b3\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u7684\u95ee\u9898\u3002<\/p>\n \u4e3a\u4ec0\u4e48\u9700\u8981\u8fdb\u884cC\u8bed\u8a00\u7684\u7f16\u8bd1\u8fc7\u7a0b\uff1f<\/strong><\/p>\n C\u8bed\u8a00\u662f\u4e00\u79cd\u9ad8\u7ea7\u7f16\u7a0b\u8bed\u8a00\uff0c\u8ba1\u7b97\u673a\u65e0\u6cd5\u76f4\u63a5\u7406\u89e3\u5b83\uff0c\u56e0\u6b64\u9700\u8981\u5c06C\u8bed\u8a00\u4ee3\u7801\u7ffb\u8bd1\u6210\u8ba1\u7b97\u673a\u80fd\u591f\u6267\u884c\u7684\u673a\u5668\u4ee3\u7801\u3002\u8fd9\u4e2a\u7ffb\u8bd1\u7684\u8fc7\u7a0b\u5c31\u662f\u7f16\u8bd1\u8fc7\u7a0b\u3002<\/p>\n \u7f16\u8bd1\u8fc7\u7a0b\u5305\u62ec\u54ea\u4e9b\u6b65\u9aa4\uff1f<\/strong><\/p>\n 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