test.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 typedef struct {
   5         int a;
   6         int b;
   7         int (*ptFunction) (int, int);
   8 } fraction;
   9
  10 int DoIt (int x, int y){ printf("DoIt\n"); return x+y;}
  11 int DoIt2 (int x, int y){ printf("DoIt2\n"); return y-x;}
  12
  13 int main(){
  14         fraction *f;
  15         f = malloc(sizeof(fraction)*2);
  16
  17         f[0].a = 5;
  18         f[0].b = 6;
  19         f[0].ptFunction = &DoIt;
  20         f[1].a = 10;
  21         f[1].b = 11;
  22         f[1].ptFunction = &DoIt2;
  23
  24         printf("f[1].a: %d, f[1].b: %d \n",f[1].a,f[1].b);
  25         printf("call 0 : %d\n",f[0].ptFunction(f[0].a,f[0].b));
  26         printf("call 1 : %d\n",f[1].ptFunction(f[1].a,f[1].b));
  27
  28         free(f);
  29
  30         return 1;
  31 }