{"id":373,"date":"2020-11-03T12:30:04","date_gmt":"2020-11-03T16:30:04","guid":{"rendered":"http:\/\/www.prglab.com\/blog\/?page_id=373"},"modified":"2020-11-03T12:30:04","modified_gmt":"2020-11-03T16:30:04","slug":"preprocessor-directives","status":"publish","type":"page","link":"https:\/\/www.prglab.com\/blog\/cplusplus-tutorial\/advanced-concepts\/preprocessor-directives","title":{"rendered":"\u9884\u5904\u7406\u6307\u4ee4"},"content":{"rendered":"\n

5.5 \u9884\u5904\u7406\u6307\u4ee4 (Preprocessor Directives)<\/h2>\n\n\n\n

\u9884\u5904\u7406\u6307\u4ee4\u662f\u6211\u4eec\u5199\u5728\u7a0b\u5e8f\u4ee3\u7801\u4e2d\u7684\u7ed9\u9884\u5904\u7406\u5668(preprocessor)\u7684 \u547d\u4ee4\uff0c\u800c\u4e0d\u662f\u7a0b\u5e8f\u672c\u8eab\u7684\u8bed\u53e5\u3002\u9884\u5904\u7406\u5668\u5728\u6211\u4eec\u7f16\u8bd1\u4e00\u4e2aC++\u7a0b\u5e8f\u65f6\u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u6267\u884c\uff0c\u5b83\u8d1f\u8d23\u63a7\u5236\u5bf9\u7a0b\u5e8f\u4ee3\u7801\u7684\u7b2c\u4e00\u6b21\u9a8c\u8bc1\u548c\u6d88\u5316\u3002<\/p>\n\n\n\n

\u6240\u6709\u8fd9\u4e9b\u6307\u4ee4\u5fc5\u987b\u5199\u5728\u5355\u72ec\u7684\u4e00\u884c\u4e2d\uff0c\u5b83\u4eec\u4e0d\u9700\u8981\u52a0\u7ed3\u5c3e\u7684\u5206\u53f7;\u3002<\/p>\n\n\n\n

#define<\/h3>\n\n\n\n

\u5728\u8fd9\u4e2a\u6559\u7a0b\u7684\u5f00\u5934\u6211\u4eec\u5df2\u7ecf\u63d0\u5230\u4e86\u4e00\u79cd\u9884\u5904\u7406\u6307\u4ee4\uff1a #define \uff0c\u53ef\u4ee5\u88ab\u7528\u6765\u751f\u6210\u5b8f\u5b9a\u4e49\u5e38\u91cf(defined constantants \u6216 macros)\uff0c\u5b83\u7684\u5f62\u5f0f\u662f\uff1a#define name value<\/code><\/p>\n\n\n\n

\u5b83\u7684\u4f5c\u7528\u662f\u5b9a\u4e49\u4e00\u4e2a\u53eb\u505aname \u7684\u5b8f\u5b9a\u4e49\uff0c\u7136\u540e\u6bcf\u5f53\u5728\u7a0b\u5e8f\u4e2d\u9047\u5230\u8fd9\u4e2a\u540d\u5b57\u7684\u65f6\u5019\uff0c\u5b83\u5c31\u4f1a\u88abvalue\u4ee3\u66ff\uff0c\u4f8b\u5982\uff1a#define MAX_WIDTH 100
char str1[MAX_WIDTH];
char str2[MAX_WIDTH];<\/p>\n\n\n\n

\u5b83\u5b9a\u4e49\u4e86\u4e24\u4e2a\u6700\u591a\u53ef\u4ee5\u5b58\u50a8100\u4e2a\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n

#define \u4e5f\u53ef\u4ee5\u88ab\u7528\u6765\u5b9a\u4e49\u5b8f\u51fd\u6570\uff1a#define getmax(a,b) a>b?a:b
int x=5, y;
y = getmax(x,2);<\/p>\n\n\n\n

\u8fd9\u6bb5\u4ee3\u7801\u6267\u884c\u540ey \u7684\u503c\u4e3a5 \u3002<\/p>\n\n\n\n

#undef<\/h3>\n\n\n\n

#undef \u5b8c\u6210\u4e0e #define\u76f8\u53cd\u7684\u5de5\u4f5c\uff0c\u5b83\u53d6\u6d88\u5bf9\u4f20\u5165\u7684\u53c2\u6570\u7684\u5b8f\u5b9a\u4e49\uff1a#define MAX_WIDTH 100
char str1[MAX_WIDTH];
#undef MAX_WIDTH
#define MAX_WIDTH 200
char str2[MAX_WIDTH];<\/p>\n\n\n\n

#ifdef, #ifndef, #if, #endif, #else and #elif<\/h3>\n\n\n\n

\u8fd9\u4e9b\u6307\u4ee4\u53ef\u4ee5\u4f7f\u7a0b\u5e8f\u7684\u4e00\u90e8\u5206\u5728\u67d0\u79cd\u6761\u4ef6\u4e0b\u88ab\u5ffd\u7565\u3002<\/p>\n\n\n\n

#ifdef \u53ef\u4ee5\u4f7f\u4e00\u6bb5\u7a0b\u5e8f\u53ea\u6709\u5728\u67d0\u4e2a\u6307\u5b9a\u5e38\u91cf\u5df2\u7ecf\u88ab\u5b9a\u4e49\u4e86\u7684\u60c5\u51b5\u4e0b\u624d\u88ab\u7f16\u8bd1\uff0c\u65e0\u8bba\u88ab\u5b9a\u4e49\u7684\u503c\u662f\u4ec0\u4e48\u3002\u5b83\u7684\u64cd\u4f5c\u662f\uff1a#ifdef name
\/\/ code here
#endif<\/p>\n\n\n\n

\u4f8b\u5982\uff1a#ifdef MAX_WIDTH
char str[MAX_WIDTH];
#endif<\/p>\n\n\n\n

\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u8bed\u53e5char str[MAX_WIDTH]; \u53ea\u6709\u5728\u5b8f\u5b9a\u4e49\u5e38\u91cfMAX_WIDTH \u5df2\u7ecf\u88ab\u5b9a\u4e49\u7684\u60c5\u51b5\u4e0b\u624d\u88ab\u7f16\u8bd1\u5668\u8003\u8651\uff0c\u4e0d\u7ba1\u5b83\u7684\u503c\u662f\u4ec0\u4e48\u3002\u5982\u679c\u5b83\u8fd8\u6ca1\u6709\u88ab\u5b9a\u4e49\uff0c\u8fd9\u4e00\u884c\u4ee3\u7801\u5219\u4e0d\u4f1a\u88ab\u5305\u62ec\u5728\u7a0b\u5e8f\u4e2d\u3002<\/p>\n\n\n\n

#ifndef \u8d77\u76f8\u53cd\u7684\u4f5c\u7528\uff1a\u5728\u6307\u4ee4#ifndef \u548c #endif \u4e4b\u95f4\u7684\u4ee3\u7801\u53ea\u6709\u5728\u67d0\u4e2a\u5e38\u91cf\u6ca1\u6709\u88ab\u5b9a\u4e49\u7684\u60c5\u51b5\u4e0b\u624d\u88ab\u7f16\u8bd1\uff0c\u4f8b\u5982\uff1a#ifndef MAX_WIDTH
#define MAX_WIDTH 100
#endif
char str[MAX_WIDTH];<\/p>\n\n\n\n

\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c\u5f53\u5904\u7406\u5230\u8fd9\u6bb5\u4ee3\u7801\u7684\u65f6\u5019MAX_WIDTH \u8fd8\u6ca1\u6709\u88ab\u5b9a\u4e49\uff0c\u5219\u5b83\u4f1a\u88ab\u5b9a\u4e49\u4e3a\u503c100\u3002\u800c\u5982\u679c\u5b83\u5df2\u7ecf\u88ab\u5b9a\u4e49\u4e86\uff0c\u90a3\u4e48\u5b83\u4f1a\u4fdd\u6301\u539f\u503c (\u56e0\u4e3a#define \u8bed\u53e5\u8fd9\u4e00\u884c\u4e0d\u4f1a\u88ab\u6267\u884c) \u3002<\/p>\n\n\n\n

\u6307\u4ee4#if, #else \u548c #elif (elif = else if) \u7528\u6765\u4f7f\u5f97\u5176\u540e\u9762\u6240\u8ddf\u7684\u7a0b\u5e8f\u90e8\u5206\u53ea\u6709\u5728\u7279\u5b9a\u6761\u4ef6\u4e0b\u624d\u88ab\u7f16\u8bd1\u3002\u8fd9\u4e9b\u6761\u4ef6\u53ea\u80fd\u591f\u662f\u5e38\u91cf\u8868\u8fbe\u5f0f\uff0c\u4f8b\u5982\uff1a#if MAX_WIDTH>200
#undef MAX_WIDTH
#define MAX_WIDTH 200<\/p>\n\n\n\n

#elsif MAX_WIDTH<50
#undef MAX_WIDTH
#define MAX_WIDTH 50<\/p>\n\n\n\n

#else
#undef MAX_WIDTH
#define MAX_WIDTH 100
#endif<\/p>\n\n\n\n

char str[MAX_WIDTH];<\/p>\n\n\n\n

\u6ce8\u610f\u770b\u8fd9\u4e00\u8fde\u4e32\u7684\u6307\u4ee4 #if, #elsif \u548c #else \u662f\u600e\u6837\u4ee5 #endif \u7ed3\u5c3e\u7684\u3002<\/p>\n\n\n\n

#line<\/h3>\n\n\n\n

\u5f53\u6211\u4eec\u7f16\u8bd1\u4e00\u6bb5\u7a0b\u5e8f\u7684\u65f6\u5019\uff0c\u5982\u679c\u6709\u9519\u8bef\u53d1\u751f\uff0c\u7f16\u8bd1\u5668\u4f1a\u5728\u9519\u8bef\u524d\u9762\u663e\u793a\u51fa\u9519\u6587\u4ef6\u7684\u540d\u79f0\u4ee5\u53ca\u6587\u4ef6\u4e2d\u7684\u7b2c\u51e0\u884c\u53d1\u751f\u7684\u9519\u8bef\u3002<\/p>\n\n\n\n

\u6307\u4ee4#line \u53ef\u4ee5\u4f7f\u6211\u4eec\u5bf9\u8fd9\u4e24\u70b9\u8fdb\u884c\u63a7\u5236\uff0c\u4e5f\u5c31\u662f\u8bf4\u5f53\u51fa\u9519\u65f6\u663e\u793a\u6587\u4ef6\u4e2d\u7684\u884c\u6570\u4ee5\u53ca\u6211\u4eec\u5e0c\u671b\u663e\u793a\u7684\u6587\u4ef6\u540d\u3002\u5b83\u7684\u683c\u5f0f\u662f\uff1a#line number \"filename\"<\/code><\/p>\n\n\n\n

\u8fd9\u91ccnumber \u662f\u5c06\u4f1a\u8d4b\u7ed9\u4e0b\u4e00\u884c\u7684\u65b0\u884c\u6570\u3002\u5b83\u540e\u9762\u7684\u884c\u6570\u4ece\u8fd9\u4e00\u70b9\u9010\u4e2a\u9012\u589e\u3002<\/p>\n\n\n\n

filename \u662f\u4e00\u4e2a\u53ef\u9009\u53c2\u6570\uff0c\u7528\u6765\u66ff\u6362\u81ea\u6b64\u884c\u4ee5\u540e\u51fa\u9519\u65f6\u663e\u793a\u7684\u6587\u4ef6\u540d\uff0c\u76f4\u5230\u6709\u53e6\u5916\u4e00\u4e2a#line\u6307\u4ee4\u66ff\u6362\u5b83\u6216\u76f4\u5230\u6587\u4ef6\u7684\u672b\u5c3e\u3002\u4f8b\u5982\uff1a#line 1 “assigning variable”
int a?;<\/p>\n\n\n\n

\u8fd9\u6bb5\u4ee3\u7801\u5c06\u4f1a\u4ea7\u751f\u4e00\u4e2a\u9519\u8bef\uff0c\u663e\u793a\u4e3a\u5728\u6587\u4ef6”assigning variable”, line 1 \u3002<\/p>\n\n\n\n

#error<\/h3>\n\n\n\n

\u8fd9\u4e2a\u6307\u4ee4\u5c06\u4e2d\u65ad\u7f16\u8bd1\u8fc7\u7a0b\u5e76\u8fd4\u56de\u4e00\u4e2a\u53c2\u6570\u4e2d\u5b9a\u4e49\u7684\u51fa\u9519\u4fe1\u606f\uff0c\u4f8b\u5982\uff1a#ifndef __cplusplus
#error A C++ compiler is required
#endif<\/p>\n\n\n\n

\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\u5982\u679c __cplusplus \u6ca1\u6709\u88ab\u5b9a\u4e49\u5c31\u4f1a\u4e2d\u65ad\u7f16\u8bd1\u8fc7\u7a0b\u3002<\/p>\n\n\n\n

#include<\/h3>\n\n\n\n

\u8fd9\u4e2a\u6307\u4ee4\u6211\u4eec\u5df2\u7ecf\u89c1\u5230\u5f88\u591a\u6b21\u3002\u5f53\u9884\u5904\u7406\u5668\u627e\u5230\u4e00\u4e2a#include \u6307\u4ee4\u65f6\uff0c\u5b83\u7528\u6307\u5b9a\u6587\u4ef6\u7684\u5168\u90e8\u5185\u5bb9\u66ff\u6362\u8fd9\u6761\u8bed\u53e5\u3002\u58f0\u660e\u5305\u542b\u4e00\u4e2a\u6587\u4ef6\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a#include \"file\"
#include <file><\/code><\/p>\n\n\n\n

\u4e24\u79cd\u8868\u8fbe\u7684\u552f\u4e00\u533a\u522b\u662f\u7f16\u8bd1\u5668\u5e94\u8be5\u5728\u4ec0\u4e48\u8def\u7ecf\u4e0b\u5bfb\u627e\u6307\u5b9a\u7684\u6587\u4ef6\u3002\u7b2c\u4e00\u79cd\u60c5\u51b5\u4e0b\uff0c\u6587\u4ef6\u540d\u88ab\u5199\u5728\u53cc\u5f15\u53f7\u4e2d\uff0c\u7f16\u8bd1\u5668\u9996\u5148\u5728\u5305\u542b\u8fd9\u6761\u6307\u4ee4\u7684\u6587\u4ef6\u6240\u5728\u7684\u76ee\u5f55\u4e0b\u8fdb\u884c\u5bfb\u627e\uff0c\u5982\u679c\u627e\u4e0d\u5230\u6307\u5b9a\u6587\u4ef6\uff0c\u7f16\u8bd1\u5668\u518d\u5230\u88ab\u914d\u7f6e\u7684\u9ed8\u8ba4\u8def\u5f84\u4e0b\uff08\u4e5f\u5c31\u662f\u6807\u51c6\u5934\u6587\u4ef6\u8def\u5f84\u4e0b\uff09\u8fdb\u884c\u5bfb\u627e\u3002<\/p>\n\n\n\n

\u5982\u679c\u6587\u4ef6\u540d\u662f\u5728\u5c16\u62ec\u53f7 <> \u4e2d\uff0c\u7f16\u8bd1\u5668\u4f1a\u76f4\u63a5\u5230\u9ed8\u8ba4\u6807\u51c6\u5934\u6587\u4ef6\u8def\u5f84\u4e0b\u5bfb\u627e\u3002<\/p>\n\n\n\n

#pragma<\/h3>\n\n\n\n

\u8fd9\u4e2a\u6307\u4ee4\u662f\u7528\u6765\u5bf9\u7f16\u8bd1\u5668\u8fdb\u884c\u914d\u7f6e\u7684\uff0c\u9488\u5bf9\u4f60\u6240\u4f7f\u7528\u7684\u5e73\u53f0\u548c\u7f16\u8bd1\u5668\u800c\u6709\u6240\u4e0d\u540c\u3002\u8981\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u8003\u4f60\u7684\u7f16\u8bd1\u5668\u624b\u518c\u3002<\/p>\n\n\n\n

\u5982\u679c\u4f60\u7684\u7f16\u8bd1\u5668\u4e0d\u652f\u6301\u67d0\u4e2a#pragma\u7684\u7279\u5b9a\u53c2\u6570\uff0c\u8fd9\u4e2a\u53c2\u6570\u4f1a\u88ab\u5ffd\u7565\uff0c\u4e0d\u4f1a\u4ea7\u751f\u51fa\u9519\u3002<\/p>\n\n\n\n

\u9884\u5b9a\u4e49\u7684\u5b8f\u540d\u79f0 (Predefined macro names)<\/h3>\n\n\n\n

\u4ee5\u4e0b\u5b8f\u540d\u79f0\u5728\u4efb\u4f55\u65f6\u5019\u90fd\u662f\u5b9a\u4e49\u597d\u7684\uff1a<\/p>\n\n\n\n

macro<\/th>value<\/th><\/tr>
__LINE__<\/td>\u6574\u6570\u503c\uff0c\u8868\u793a\u5f53\u524d\u6b63\u5728\u7f16\u8bd1\u7684\u884c\u5728\u6e90\u6587\u4ef6\u4e2d\u7684\u884c\u6570\u3002<\/td><\/tr>
__FILE__<\/td>\u5b57\u7b26\u4e32\uff0c\u8868\u793a\u88ab\u7f16\u8bd1\u7684\u6e90\u6587\u4ef6\u7684\u6587\u4ef6\u540d\u3002<\/td><\/tr>
__DATE__<\/td>\u4e00\u4e2a\u683c\u5f0f\u4e3a “Mmm dd yyyy” \u7684\u5b57\u7b26\u4e32\uff0c\u5b58\u50a8\u7f16\u8bd1\u5f00\u59cb\u7684\u65e5\u671f\u3002<\/td><\/tr>
__TIME__<\/td>\u4e00\u4e2a\u683c\u5f0f\u4e3a “hh:mm:ss” \u7684\u5b57\u7b26\u4e32\uff0c\u5b58\u50a8\u7f16\u8bd1\u5f00\u59cb\u7684\u65f6\u95f4\u3002<\/td><\/tr>
__cplusplus<\/td>\u6574\u6570\u503c\uff0c\u6240\u6709C++\u7f16\u8bd1\u5668\u90fd\u5b9a\u4e49\u4e86\u8fd9\u4e2a\u5e38\u91cf\u4e3a\u67d0\u4e2a\u503c\u3002\u5982\u679c\u8fd9\u4e2a\u7f16\u8bd1\u5668\u662f\u5b8c\u5168\u9075\u5b88C++\u6807\u51c6\u7684\uff0c\u5b83\u7684\u503c\u5e94\u8be5\u7b49\u4e8e\u6216\u5927\u4e8e199711L\uff0c\u5177\u4f53\u503c\u53d6\u51b3\u4e8e\u5b83\u9075\u5b88\u7684\u662f\u54ea\u4e2a\u7248\u672c\u7684\u6807\u51c6\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u4f8b\u5982\uff1a<\/p>\n\n\n\n

\/\/ \u6807\u51c6\u5b8f\u540d\u79f0
#include <iostream>
using namespace std;

int main()
{
cout << “This is the line number “
<< __LINE__;
cout << ” of file ” << __FILE__
<< “.\\n”;
cout << “Its compilation began “
<< __DATE__;
cout << ” at ” << __TIME__ << “.\\n”;
cout << “The compiler gives a “
<<“__cplusplus value of “
<< __cplusplus;
return 0;
}<\/td>		This is the line number 7 of file \/home\/jay\/stdmacronames.cpp.
Its compilation began Nov 1 2005 at 10:12:29.
The compiler gives a __cplusplus value of 1<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

5.5 \u9884\u5904\u7406\u6307\u4ee4 (Preprocessor Directives) \u9884\u5904\u7406\u6307\u4ee4\u662f\u6211\u4eec\u5199\u5728\u7a0b\u5e8f\u4ee3\u7801\u4e2d\u7684\u7ed9\u9884\u5904\u7406\u5668(preprocessor)\u7684 \u547d\u4ee4\uff0c\u800c\u4e0d\u662f\u7a0b\u5e8f\u672c\u8eab\u7684\u8bed\u53e5\u3002\u9884\u5904\u7406\u5668\u5728\u6211\u4eec\u7f16\u8bd1\u4e00\u4e2aC++\u7a0b\u5e8f\u65f6\u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u6267\u884c\uff0c\u5b83\u8d1f\u8d23\u63a7\u5236\u5bf9\u7a0b\u5e8f\u4ee3\u7801\u7684\u7b2c\u4e00\u6b21\u9a8c\u8bc1\u548c\u6d88\u5316\u3002 \u6240\u6709\u8fd9\u4e9b\u6307\u4ee4\u5fc5\u987b\u5199\u5728\u5355\u72ec\u7684\u4e00\u884c\u4e2d\uff0c\u5b83\u4eec\u4e0d\u9700\u8981\u52a0\u7ed3\u5c3e\u7684\u5206\u53f7;\u3002 #define \u5728\u8fd9\u4e2a\u6559\u7a0b\u7684\u5f00\u5934\u6211\u4eec\u5df2\u7ecf\u63d0\u5230\u4e86\u4e00\u79cd\u9884\u5904\u7406\u6307\u4ee4\uff1a #define \uff0c\u53ef\u4ee5\u88ab\u7528\u6765\u751f\u6210\u5b8f\u5b9a\u4e49\u5e38\u91cf(defined constantants \u6216 macros)\uff0c\u5b83\u7684\u5f62\u5f0f\u662f\uff1a#define name value \u5b83\u7684\u4f5c\u7528\u662f\u5b9a\u4e49\u4e00\u4e2a\u53eb\u505aname \u7684\u5b8f\u5b9a\u4e49\uff0c\u7136\u540e\u6bcf\u5f53\u5728\u7a0b\u5e8f\u4e2d\u9047\u5230\u8fd9\u4e2a\u540d\u5b57\u7684\u65f6\u5019\uff0c\u5b83\u5c31\u4f1a\u88abvalue\u4ee3\u66ff\uff0c\u4f8b\u5982\uff1a#define MAX_WIDTH 100char str1[MAX_WIDTH];char str2[MAX_WIDTH]; \u5b83\u5b9a\u4e49\u4e86\u4e24\u4e2a\u6700\u591a\u53ef\u4ee5\u5b58\u50a8100\u4e2a\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\u3002 #define \u4e5f\u53ef\u4ee5\u88ab\u7528\u6765\u5b9a\u4e49\u5b8f\u51fd\u6570\uff1a#define getmax(a,b) a>b?a:bint x=5, y;y = getmax(x,2); \u8fd9\u6bb5\u4ee3\u7801\u6267\u884c\u540ey \u7684\u503c\u4e3a5 \u3002 #undef #undef \u5b8c\u6210\u4e0e #define\u76f8\u53cd\u7684\u5de5\u4f5c\uff0c\u5b83\u53d6\u6d88\u5bf9\u4f20\u5165\u7684\u53c2\u6570\u7684\u5b8f\u5b9a\u4e49\uff1a#define MAX_WIDTH 100char str1[MAX_WIDTH];#undef MAX_WIDTH#define MAX_WIDTH 200char str2[MAX_WIDTH]; #ifdef, #ifndef, #if, #endif, #else and #elif \u8fd9\u4e9b\u6307\u4ee4\u53ef\u4ee5\u4f7f\u7a0b\u5e8f\u7684\u4e00\u90e8\u5206\u5728\u67d0\u79cd\u6761\u4ef6\u4e0b\u88ab\u5ffd\u7565\u3002 #ifdef \u53ef\u4ee5\u4f7f\u4e00\u6bb5\u7a0b\u5e8f\u53ea\u6709\u5728\u67d0\u4e2a\u6307\u5b9a\u5e38\u91cf\u5df2\u7ecf\u88ab\u5b9a\u4e49\u4e86\u7684\u60c5\u51b5\u4e0b\u624d\u88ab\u7f16\u8bd1\uff0c\u65e0\u8bba\u88ab\u5b9a\u4e49\u7684\u503c\u662f\u4ec0\u4e48\u3002\u5b83\u7684\u64cd\u4f5c\u662f\uff1a#ifdef […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":361,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages\/373"}],"collection":[{"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/comments?post=373"}],"version-history":[{"count":1,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages\/373\/revisions"}],"predecessor-version":[{"id":374,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages\/373\/revisions\/374"}],"up":[{"embeddable":true,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages\/361"}],"wp:attachment":[{"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/media?parent=373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}