第 16 章 C 预处理器和 C 库（预定义宏）

 /*-------------------------------------
     predef.c -- 预定义宏和预定义标识符
 -------------------------------------*/

 #include <stdio.h>

 void why_me(void);

 int main()
 {
     printf("The file is %s.\n", __FILE__);
     printf("The data is %s.\n", __DATE__);
     printf("The time is %s.\n", __TIME__);
     //printf("The version is %ld.\n", __STDC__);
     printf("This is line %d.\n", __LINE__);
     printf("This function is %s\n", __FUNCTION__);

     why_me();

     return ;
 }

 void why_me()
 {
     printf("This function is %s\n", __FUNCTION__);
     printf("This is line %d.\n", __LINE__);
 }

predef.c