age.h文件内容:
#define P printf
#define D "%d"
#define A (age+1)
age.c文件如下:
#include "stdio.h"
#include "age.h"
int main(){
int age=3;
age=A;
P("年龄是"D"岁\n",age);
return 0;
}
宏定义的#include指令
age.h文件内容:
#define P printf
#define D "%d"
#define A (age+1)
age.c文件如下:
#include "stdio.h"
#include "age.h"
int main(){
int age=3;
age=A;
P("年龄是"D"岁\n",age);
return 0;
}
