macro.c

来自「cygwin下的包含各种c基本操作的demo程序」· C语言 代码 · 共 45 行

//------------------------------------------
//          to test the define and the -> operation
//------------------------------------------

#include "my_common.h"

void dummy_str_fun(char *);
#define a2i(x)  do{printf("a2i:%s\n",x);}  while(0)

//#define a_fun_str->f_p(x) dummy_str_fun(x)  //this will not work ????????

extern void fun_p(char *);

#ifdef __cplusplus
extern "C"   {
#endif

void dummy_str_fun(char *str){NULL;}

void macro_test()
{
     char *str = "the macro test str";
     fun_str *a_fun_str = (fun_str*)malloc(sizeof(fun_str)); 
     a_fun_str->aa = 10;
     a_fun_str->f_p =fun_p;
     
     
     printf("the value of a_fun_str is %x\n",a_fun_str); 
     printf("the value of aa is %d \n",*a_fun_str);         
    
     
     EXAM_ASSERT( 10 == a_fun_str->aa );
     //printf( "the value of aa is %d",a_fun_str->aa);
     a_fun_str->f_p("yeah");
     a2i(str);
     a2i("2:good");
     
     return;
}

void dummy_printf(char *fmt,...){ NULL;}

#ifdef __cplusplus
}
#endif