{"id":211,"date":"2014-12-07T11:34:04","date_gmt":"2014-12-07T03:34:04","guid":{"rendered":"http:\/\/yangwang.hk\/?p=211"},"modified":"2015-05-10T17:50:27","modified_gmt":"2015-05-10T09:50:27","slug":"1-6%e3%80%81%e9%a2%84%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/yangwang.hk\/?p=211","title":{"rendered":"1.6\u3001\u9884\u5904\u7406"},"content":{"rendered":"<p>\u4f55\u4e3a\u9884\u5904\u7406\uff1f<\/p>\n<p>\u8fd8\u8bb0\u5f97\u4e4b\u524d\u8bf4\u8fc7\u7684c\u8bed\u8a00\u7684\u7279\u70b9\u5417\uff1f<\/p>\n<p>c\u8bed\u8a00\u662f\u4e00\u4e2a\u7f16\u8bd1\u7684\u8bed\u8a00<\/p>\n<p>\u4f46\u662f\u4ece\u6211\u4eec\u5199\u51fa\u6765\u7684\u6e90\u7801\uff0c\u5230\u751f\u6210\u53ef\u6267\u884c\u6587\u4ef6\uff08\u7a0b\u5e8f\uff09\uff0c\u4e2d\u95f4\u5e76\u4e0d\u662f\u4ec5\u4ec5\u901a\u8fc7\u4e86\u7f16\u8bd1\u8fd9\u4e2a\u8fc7\u7a0b\u3002<\/p>\n<p>\u5728\u7f16\u8bd1\u4e4b\u524d\uff0c\u5176\u5b9e\u8fd8\u6709\u4e00\u4e2a\u9884\u5904\u7406\u9636\u6bb5\u3002<\/p>\n<p>\u4ee5\u4e0b\u9762\u8fd9\u4e2a\u7a0b\u5e8f\u4e3a\u4f8b<\/p>\n<pre class=\"brush: cpp; title: ; notranslate\" title=\"\">\r\n#include &lt;stdio.h&gt;\r\n#define str &quot;hello!&quot;\r\n\r\nint main(void)\r\n{\r\n    printf(str);\r\n    return 0;\r\n}\r\n<\/pre>\n<p>\u8bf7\u590d\u5236\u8fd9\u4e00\u6bb5\u4ee3\u7801\uff0c\u5b8c\u6210\u7f16\u8bd1\u3001\u6267\u884c\u540e\u518d\u63a5\u7740\u5f80\u4e0b\u770b<\/p>\n<p>\u5982\u679c\u4f60\u6210\u529f\u4e86\uff0c\u4ed6\u5e94\u8be5\u663e\u793a\u4e00\u884chello<\/p>\n<p>\u5728\u8fd9\u4e2a\u7a0b\u5e8f\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u4e24\u4e2a\u9884\u5904\u7406\u6307\u4ee4\u3002<\/p>\n<p>\u5c31\u662f\u5f00\u5934\u7684include\u548cdefine<\/p>\n<p>\u50cf\u8fd9\u6837\u4ee5\u524d\u9762\u4ee5#\u5f00\u5934\u7684\u547d\u4ee4\uff0c\u90fd\u5c5e\u4e8e\u9884\u5904\u7406\u547d\u4ee4<\/p>\n<p>include\u524d\u9762\u5df2\u7ecf\u8bb2\u8fc7\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u628a\u5916\u90e8\u7684\u6587\u4ef6\u5305\u542b\u8fdb\u6765\u3002\u76f8\u5f53\u4e8e\u628astdio.h\u8fd9\u4e2a\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9\u653e\u5230include\u8fd9\u4e2a\u547d\u4ee4\u7684\u4e3a\u4f4d\u7f6e<\/p>\n<p>include\u6709\u4e24\u79cd\u5199\u6cd5\uff0c\u4e00\u79cd\u662f#include &lt;&#8230;&gt;\uff0c\u53e6\u4e00\u79cd\u662f#include &#8220;&#8230;&#8221;\u3002<\/p>\n<p>\u4e24\u8005\u7684\u533a\u522b\u5728\u4e8e\uff0c\u7528&lt;&gt;\u62ec\u8d77\u6765\u7684\u6587\u4ef6\u9ed8\u8ba4\u76ee\u5f55\u5728\u7f16\u8bd1\u5668\u7684include\u76ee\u5f55\uff0c\u8fd9\u91cc\u4e00\u822c\u662f\u5404\u79cd\u5e93\u6587\u4ef6\uff0c\u5982stdio.h, stdlib.h, string.h\u7b49\u7b49\u7b49\u7b49<\/p>\n<p>\u800c\u7b2c\u4e8c\u79cd\u5199\u6cd5\uff0c\u7528&#8221;&#8221;\u5305\u542b\u8d77\u6765\u7684\u6587\u4ef6\uff0c\u9884\u5904\u7406\u5668\u4f1a\u5148\u5728\u5de5\u7a0b\u76ee\u5f55\u641c\u7d22(\u5c31\u662f\u4f60\u7a0b\u5e8f\u6e90\u7801\u4fdd\u5b58\u7684\u76ee\u5f55)\uff0c\u5982\u679c\u6ca1\u6709\u627e\u5230\uff0c\u518d\u5230\u9ed8\u8ba4\u7684include\u76ee\u5f55\u5185\u67e5\u627e\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u6211\u4eec\u5982\u679c\u5199\u4e86\u4e00\u4e2a\u5934\u6587\u4ef6\uff0c\u5e76\u4e14\u9700\u8981\u5728\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u3002\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u628a\u8fd9\u4e2a\u5934\u6587\u4ef6\u653e\u5230include\u76ee\u5f55\u4e0b\uff0c\u4f7f\u7528\u7b2c\u4e00\u79cd\u65b9\u6cd5\u5305\u542b\u5b83<\/p>\n<p>\u6216\u8005\u653e\u5728\u5de5\u7a0b\u76ee\u5f55\uff0c\u4f7f\u7528\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u5305\u542b\u5b83\u3002<\/p>\n<p>\u7b2c\u4e00\u79cd\u65b9\u6cd5\u4e0d\u63a8\u8350\u4f7f\u7528\uff0c\u7279\u522b\u662f\u90a3\u79cd\u4e3a\u4e86\u67d0\u4e2a\u5de5\u7a0b\u4e13\u95e8\u5199\u7684\u5934\u6587\u4ef6\u3002\u6bd5\u7adf\u4f60\u53ea\u9700\u8981\u5728\u8fd9\u4e2a\u5de5\u7a0b\u7528\u4e00\u6b21\u3002\u4f46\u662f\u5982\u679c\u4f60\u5728\u5f88\u591a\u4e0d\u540c\u7684\u5de5\u7a0b\u4e2d\uff0c\u90fd\u8981\u4f7f\u7528\u8fd9\u4e2a\u5934\u6587\u4ef6\u3002\u4f7f\u7528\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u8fd8\u9700\u8981\u628a\u8fd9\u4e2a\u5934\u6587\u4ef6\u5f80\u6bcf\u4e2a\u5de5\u7a0b\u76ee\u5f55\u590d\u5236\u4e00\u6b21\uff0c\u8fd9\u6837\u53c8\u592a\u9ebb\u70e6\u4e86\u3002\u8fd9\u65f6\u5c31\u9700\u8981\u4f7f\u7528\u7b2c\u4e00\u79cd\u65b9\u6cd5\u4e86<\/p>\n<p>\u4e0b\u9762\u518d\u6765\u770b\u7b2c\u4e8c\u4e2a\u9884\u7f16\u8bd1\u6307\u4ee4\uff1adefine<\/p>\n<p>define\u7684\u82f1\u6587\u610f\u601d\u5c31\u662f\u5b9a\u4e49\uff0c\u4ed6\u5728\u8fd9\u91cc\u7684\u610f\u601d\u4e5f\u662f\u5b9a\u4e49\u3002\u5b9a\u4e49\u201c\u5b8f\u201d<\/p>\n<p>\u5b83\u7684\u4f5c\u7528\u5c31\u662f\u66ff\u6362\u3002<\/p>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5e8f\u91cc\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2astr\u5b8f\uff0c\u7136\u540e\u6211\u4eec\u5728printf\u4e2d\u4f7f\u7528\u4e86\u5b83\u3002<\/p>\n<p>\u9884\u5904\u7406\u5668\u5728\u5904\u7406\u4f60\u7684\u6e90\u4ee3\u7801\u65f6\uff0c\u53d1\u73b0\u4e86str\uff0c\u5c31\u5c06\u4ed6\u66ff\u6362\u4e3a\u4e86&#8221;hello!&#8221;<\/p>\n<p>\u4f46\u662f\u5e76\u4e0d\u662f\u6240\u6709\u7684str\u90fd\u88ab\u66ff\u6362\uff0c\u6bd4\u5982\u88ab\u53cc\u5f15\u53f7\u5305\u62ec\u8d77\u6765\u7684\u5b57\u7b26\u4e32\u4e2d\u7684str\u5c31\u4e0d\u4f1a\u88ab\u66ff\u6362\u3002\u8bf7\u81ea\u5df1\u5c1d\u8bd5\uff0c\u5728printf\u4e2d\u7684str\u524d\u540e\u52a0\u4e0a&#8221;,\u522b\u5fd8\u4e86\u662f\u82f1\u6587\u72b6\u6001\u4e0b\u52a0<\/p>\n<p>\u8fd8\u6709\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u51fd\u6570\u53eb\u505astrs\uff0c\u8fd9\u91cc\u7684str\u4e5f\u4e0d\u4f1a\u88ab\u66ff\u6362\uff0c\u56e0\u4e3astr\u548cstrs\u662f\u4e24\u4e2a\u4e0d\u540c\u7684\u6807\u8bc6\u7b26\u3002\uff08\u5c31\u662f\u8bf4\u5b8c\u5168\u76f8\u540c\u624d\u4f1a\u66ff\u6362\uff09<\/p>\n<p>\u9664\u4e86\u4e0a\u9762\u4ecb\u7ecd\u7684\u4e24\u4e2a\u9884\u5904\u7406\u547d\u4ee4<\/p>\n<p>\u8fd8\u6709\u4e0b\u9762\u8fd9\u4e9b<\/p>\n<ul>\n<li>#undef\u6307\u4ee4\u5220\u9664\u4e00\u4e2a\u5b8f\u5b9a\u4e49<\/li>\n<li>#if,#ifdef,#ifndef,#elif,#else\u548c#dendif\u6307\u4ee4\u53ef\u4ee5\u6839\u636e\u7f16\u8bd1\u5668\u53ef\u4ee5\u6d4b\u8bd5\u7684\u6761\u4ef6\u6765\u5c06\u4e00\u6bb5\u6587\u672c\u5305\u542b\u5230\u7a0b\u5e8f\u4e2d\u6216\u6392\u9664\u5728\u7a0b\u5e8f\u4e4b\u5916\u3002<\/li>\n<li>#pragma \u4fee\u6539\u7f16\u8bd1\u5668\u7684\u8bbe\u7f6e<\/li>\n<li>#error \u4ea7\u751f\u9519\u8bef\u4fe1\u606f<\/li>\n<\/ul>\n<p>\u5173\u4e8e\u8fd9\u4e9b\u547d\u4ee4\u7684\u4f7f\u7528\uff0c\u6211\u4eec\u5c06\u5728\u540e\u9762\u8fdb\u884c\u5b66\u4e60<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f55\u4e3a\u9884\u5904\u7406\uff1f \u8fd8\u8bb0\u5f97\u4e4b\u524d\u8bf4\u8fc7\u7684c\u8bed\u8a00\u7684\u7279\u70b9\u5417\uff1f c\u8bed\u8a00\u662f\u4e00\u4e2a\u7f16\u8bd1\u7684\u8bed\u8a00 \u4f46\u662f\u4ece\u6211\u4eec\u5199\u51fa\u6765\u7684\u6e90\u7801\uff0c\u5230\u751f\u6210\u53ef\u6267\u884c\u6587\u2026 <span class=\"read-more\"><a href=\"https:\/\/yangwang.hk\/?p=211\">Read More: 1.6\u3001\u9884\u5904\u7406 &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-211","post","type-post","status-publish","format-standard","hentry","category-c"],"views":3246,"_links":{"self":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=211"}],"version-history":[{"count":3,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/211\/revisions"}],"predecessor-version":[{"id":434,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/211\/revisions\/434"}],"wp:attachment":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}