{"id":759,"date":"2024-11-07T09:51:03","date_gmt":"2024-11-07T01:51:03","guid":{"rendered":"https:\/\/fwq.ai\/blog\/759\/"},"modified":"2024-11-07T09:51:03","modified_gmt":"2024-11-07T01:51:03","slug":"c-%e4%b8%ad%e7%9a%84%e9%a2%84%e5%a4%84%e7%90%86%e6%8c%87%e4%bb%a4%e6%98%af%e5%90%a6%e4%bc%9a%e5%bd%b1%e5%93%8d%e5%87%bd%e6%95%b0%e7%9a%84%e4%ba%8c%e8%bf%9b%e5%88%b6%e5%85%bc%e5%ae%b9%e6%80%a7","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/759\/","title":{"rendered":"C++ \u4e2d\u7684\u9884\u5904\u7406\u6307\u4ee4\u662f\u5426\u4f1a\u5f71\u54cd\u51fd\u6570\u7684\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\uff1f"},"content":{"rendered":"<p>\u9884\u5904\u7406\u6307\u4ee4\u5bf9\u51fd\u6570\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u7684\u5f71\u54cd\u5982\u4e0b\uff1a\u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\u4f1a\u5f71\u54cd\u591a\u4e2a\u6e90\u6587\u4ef6\uff0c\u53ef\u80fd\u751f\u6210\u4e0d\u540c\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\u3002\u6539\u53d8\u51fd\u6570\u6216\u5168\u5c40\u7b26\u53f7\u7684\u540d\u79f0\u4f1a\u7834\u574f\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u3002\u4e3a\u4e86\u786e\u4fdd\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\uff0c\u907f\u514d\u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\u4fee\u6539\u7b26\u53f7\u540d\uff0c\u53ef\u4f7f\u7528\u6761\u4ef6\u7f16\u8bd1\u6765\u5141\u8bb8\u4e0d\u540c\u7684\u4ee3\u7801\u8def\u5f84\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1154\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/172827270780048.jpg\" width=\"720\" height=\"288\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/172827270780048.jpg 720w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/172827270780048-300x120.jpg 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/172827270780048-670x268.jpg 670w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" title=\"C++ \u4e2d\u7684\u9884\u5904\u7406\u6307\u4ee4\u662f\u5426\u4f1a\u5f71\u54cd\u51fd\u6570\u7684\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\uff1f\u63d2\u56fe\" alt=\"C++ \u4e2d\u7684\u9884\u5904\u7406\u6307\u4ee4\u662f\u5426\u4f1a\u5f71\u54cd\u51fd\u6570\u7684\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>C++ \u4e2d\u7684\u9884\u5904\u7406\u6307\u4ee4\u5bf9\u51fd\u6570\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027<\/strong><\/p>\n<p>\u9884\u5904\u7406\u6307\u4ee4\u662f\u7f16\u8bd1\u5668\u5728\u7f16\u8bd1 C++ \u6e90\u4ee3\u7801\u4e4b\u524d\u5bf9\u4ee3\u7801\u8fdb\u884c\u7684\u5904\u7406\u6307\u4ee4\u3002\u867d\u7136\u5b83\u4eec\u53ef\u4ee5\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u63d0\u4f9b\u4fbf\u5229\uff0c\u4f46\u91cd\u8981\u7684\u662f\u8981\u6ce8\u610f\u5b83\u4eec\u53ef\u80fd\u5bf9\u51fd\u6570\u7684\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u4ea7\u751f\u5f71\u54cd\u3002<\/p>\n<p><strong>\u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\u7684\u5f71\u54cd<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201cC++\u514d\u8d39\u5b66\u4e60\u7b14\u8bb0\uff08\u6df1\u5165\uff09\u201d\uff1b<\/p>\n<ul>\n<li>\u5934\u6587\u4ef6\u5305\u542b\u7531\u591a\u4e2a\u6e90\u6587\u4ef6\u5171\u4eab\u7684\u4ee3\u7801\u3002<\/li>\n<li>\u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u7684\u9884\u5904\u7406\u6307\u4ee4\u4f1a\u5728\u6bcf\u4e2a\u5305\u542b\u8be5\u5934\u6587\u4ef6\u7684\u6e90\u6587\u4ef6\u4e2d\u8fdb\u884c\u5904\u7406\u3002<\/li>\n<li>\u4f8b\u5982\uff0c\u4f7f\u7528 #define \u5b9a\u4e49\u7684\u5b8f\u5c06\u5728\u6bcf\u4e2a\u6e90\u6587\u4ef6\u4e2d\u6269\u5c55\u5230\u5176\u503c\uff0c\u53ef\u80fd\u5bfc\u81f4\u5728\u4e0d\u540c\u6e90\u6587\u4ef6\u4e2d\u751f\u6210\u4e0d\u540c\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<p><strong>\u6539\u53d8\u7b26\u53f7\u540d\u7684\u5f71\u54cd<\/strong><\/p>\n<ul>\n<li>\u9884\u5904\u7406\u6307\u4ee4\u53ef\u4ee5\u6539\u53d8\u51fd\u6570\u548c\u5168\u5c40\u7b26\u53f7\u7684\u540d\u79f0\u3002<\/li>\n<li>\u4f8b\u5982\uff0c\u4f7f\u7528 #undef \u548c #define \u53ef\u4ee5\u91cd\u547d\u540d\u7b26\u53f7\u3002<\/li>\n<li>\u8fd9\u4f1a\u5bfc\u81f4\u4e0d\u540c\u7f16\u8bd1\u5355\u5143\u751f\u6210\u4e0d\u540c\u7684\u7b26\u53f7\u8868\uff0c\u8fd9\u4f1a\u7834\u574f\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a\u5b8f\u7684\u5f71\u54cd<\/strong><\/p>\n<p>\u8003\u8651\u4e0b\u9762\u7684\u5934\u6587\u4ef6\uff1a<\/p>\n<pre>#define MAX_VALUE 100\n\nint func(int x);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5982\u679c\u5728\u4e24\u4e2a\u6e90\u6587\u4ef6\u4e2d (main.cpp \u548c other.cpp) \u4e2d\u4f7f\u7528\u6b64\u5934\u6587\u4ef6\uff0c\u5219\u53ef\u80fd\u4f1a\u4ea7\u751f\u4e0d\u540c\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\uff1a<\/p>\n<ul>\n<li>\n<p>main.cpp\uff1a<\/p>\n<pre>#include \"header.h\"\n\nint func(int x) {\nreturn x &amp;gt; MAX_VALUE;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p>other.cpp\uff1a<\/p>\n<pre>#include \"header.h\"\n\n#undef MAX_VALUE\n#define MAX_VALUE 200\n\nint func(int x) {\nreturn x &amp;gt; MAX_VALUE;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p>\u5728\u8fd9\u4e24\u4e2a\u6e90\u6587\u4ef6\u4e2d\uff0cfunc \u51fd\u6570\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\u5c06\u4e0d\u540c\uff0c\u56e0\u4e3a\u5b83\u4eec\u4f7f\u7528\u4e0d\u540c\u7684 MAX_VALUE \u503c\u3002<\/p>\n<p><strong>\u89e3\u51b3\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u95ee\u9898<\/strong><\/p>\n<p>\u4e3a\u4e86\u786e\u4fdd\u51fd\u6570\u7684\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\uff0c\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u907f\u514d\u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\u6765\u4fee\u6539\u7b26\u53f7\u540d\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\uff0c\u8bf7\u5c06\u5176\u653e\u5728\u7f16\u8bd1\u5355\u5143\u4e2d\uff0c\u800c\u4e0d\u662f\u5934\u6587\u4ef6\u4e2d\u3002<\/li>\n<li>\u4f7f\u7528\u6761\u4ef6\u7f16\u8bd1\u4ee5\u5141\u8bb8\u4e0d\u540c\u7684\u4ee3\u7801\u8def\u5f84\uff0c\u800c\u4e0d\u662f\u4fee\u6539\u7b26\u53f7\u540d\u3002<\/li>\n<\/ul>\n<p><strong>\u6761\u4ef6\u7f16\u8bd1\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>#ifdef DEBUG\n  \/\/ \u8c03\u8bd5\u4ee3\u7801\n#else\n  \/\/ \u53d1\u5e03\u4ee3\u7801\n#endif<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5141\u8bb8\u5728\u4e0d\u7834\u574f\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u7684\u60c5\u51b5\u4e0b\u5728\u4e0d\u540c\u73af\u5883\u4e2d\u7f16\u8bd1\u6e90\u4ee3\u7801\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fC++ \u4e2d\u7684\u9884\u5904\u7406\u6307\u4ee4\u662f\u5426\u4f1a\u5f71\u54cd\u51fd\u6570\u7684\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9884\u5904\u7406\u6307\u4ee4\u5bf9\u51fd\u6570\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u7684\u5f71\u54cd\u5982\u4e0b\uff1a\u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\u4f1a\u5f71\u54cd\u591a\u4e2a\u6e90\u6587\u4ef6\uff0c\u53ef\u80fd\u751f\u6210\u4e0d\u540c\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\u3002\u6539\u53d8\u51fd\u6570\u6216\u5168\u5c40\u7b26\u53f7\u7684\u540d\u79f0\u4f1a\u7834\u574f\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u3002\u4e3a\u4e86\u786e\u4fdd\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\uff0c\u907f\u514d\u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\u4fee\u6539\u7b26\u53f7\u540d\uff0c\u53ef\u4f7f\u7528\u6761\u4ef6\u7f16\u8bd1\u6765\u5141\u8bb8\u4e0d\u540c\u7684\u4ee3\u7801\u8def\u5f84\u3002 C++ \u4e2d\u7684\u9884\u5904\u7406\u6307\u4ee4\u5bf9\u51fd\u6570\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027 \u9884\u5904\u7406\u6307\u4ee4\u662f\u7f16\u8bd1\u5668\u5728\u7f16\u8bd1 C++ \u6e90\u4ee3\u7801\u4e4b\u524d\u5bf9\u4ee3\u7801\u8fdb\u884c\u7684\u5904\u7406\u6307\u4ee4\u3002\u867d\u7136\u5b83\u4eec\u53ef\u4ee5\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u63d0\u4f9b\u4fbf\u5229\uff0c\u4f46\u91cd\u8981\u7684\u662f\u8981\u6ce8\u610f\u5b83\u4eec\u53ef\u80fd\u5bf9\u51fd\u6570\u7684\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u4ea7\u751f\u5f71\u54cd\u3002 \u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\u7684\u5f71\u54cd \u7acb\u5373\u5b66\u4e60\u201cC++\u514d\u8d39\u5b66\u4e60\u7b14\u8bb0\uff08\u6df1\u5165\uff09\u201d\uff1b \u5934\u6587\u4ef6\u5305\u542b\u7531\u591a\u4e2a\u6e90\u6587\u4ef6\u5171\u4eab\u7684\u4ee3\u7801\u3002 \u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u7684\u9884\u5904\u7406\u6307\u4ee4\u4f1a\u5728\u6bcf\u4e2a\u5305\u542b\u8be5\u5934\u6587\u4ef6\u7684\u6e90\u6587\u4ef6\u4e2d\u8fdb\u884c\u5904\u7406\u3002 \u4f8b\u5982\uff0c\u4f7f\u7528 #define \u5b9a\u4e49\u7684\u5b8f\u5c06\u5728\u6bcf\u4e2a\u6e90\u6587\u4ef6\u4e2d\u6269\u5c55\u5230\u5176\u503c\uff0c\u53ef\u80fd\u5bfc\u81f4\u5728\u4e0d\u540c\u6e90\u6587\u4ef6\u4e2d\u751f\u6210\u4e0d\u540c\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\u3002 \u6539\u53d8\u7b26\u53f7\u540d\u7684\u5f71\u54cd \u9884\u5904\u7406\u6307\u4ee4\u53ef\u4ee5\u6539\u53d8\u51fd\u6570\u548c\u5168\u5c40\u7b26\u53f7\u7684\u540d\u79f0\u3002 \u4f8b\u5982\uff0c\u4f7f\u7528 #undef \u548c #define \u53ef\u4ee5\u91cd\u547d\u540d\u7b26\u53f7\u3002 \u8fd9\u4f1a\u5bfc\u81f4\u4e0d\u540c\u7f16\u8bd1\u5355\u5143\u751f\u6210\u4e0d\u540c\u7684\u7b26\u53f7\u8868\uff0c\u8fd9\u4f1a\u7834\u574f\u4e8c\u8fdb\u5236\u517c\u5bb9\u6027\u3002 \u793a\u4f8b\uff1a\u5b8f\u7684\u5f71\u54cd \u8003\u8651\u4e0b\u9762\u7684\u5934\u6587\u4ef6\uff1a #define MAX_VALUE 100 int func(int x); \u767b\u5f55\u540e\u590d\u5236 \u5982\u679c\u5728\u4e24\u4e2a\u6e90\u6587\u4ef6\u4e2d (main.cpp \u548c other.cpp) \u4e2d\u4f7f\u7528\u6b64\u5934\u6587\u4ef6\uff0c\u5219\u53ef\u80fd\u4f1a\u4ea7\u751f\u4e0d\u540c\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\uff1a main.cpp\uff1a #include &#8220;header.h&#8221; int func(int x) { return x &amp;gt; MAX_VALUE; } \u767b\u5f55\u540e\u590d\u5236 other.cpp\uff1a #include &#8220;header.h&#8221; #undef MAX_VALUE #define MAX_VALUE [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-759","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=759"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/759\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}