實例:
#define add(some,new) some_##new
那麼add(view,pic)將被編譯爲view_pic
#define prt(name) printf(#name)
那麼 prt(error)將被編譯爲 printf("error");
程序示例:
1 #include <stdio.h>
2
3 #define print(name,value) print_##name(#value);
4
5 int print_audi(char *p){
6 printf("this is audi with %s \n",p);
7 return 0;
8 }
9 int print_bmw(char *p){
10 printf("this is bmw with %s \n",p);
11 return 0;
12 }
13 int main(){
14
15 print(audi,good);
16 print(bmw,better);
17
18 return 0;
19 }
輸出爲
this is audi with good
this is bmw with better