Thread: Funciton pointer and array varaible assignment

Hi ,

I am doing one sample program with function pointer.

Missing part for me is how bags array first index is getting replaced .
Line number 10 calls function next , but how come value getting changed in bags arrary.

Below is the code.

Code:

 1#include <stdio.h>
 2#include <stdlib.h>
 3
 4int bags[5]={20,5,20,3,20};
 5
 6main(void)
 7{
 8  int pos=15,*next();
 9  printf("%d %d\n",bags[0],bags[1]);
10  *next()=pos;
11  printf("%d %d %d",pos,*next(),bags[0]);
12}
13
14
15
16int *next()
17{
18  int i;
19  for (i=0;i<5;i++)
20    if (bags[i]==20)
21      {
22         return (bags+i);
23      }
24  printf("Error!");
25  exit(0);
26}

output:
20 5
15 20 15

Any inputs on this would be highly appreciated.

Thanks for the reply.