Need help in PERMUT2

[mealer]

I have just learned C++ for a few days so i can't know what make me wrong. Please help me!

#include <stdio.h>
int main(void)
{ long f[100000],n,i;
  scanf("%d",&n);
  while (n!=0)
  { i=1; while (i<n+1) {scanf("%d",f); i++;}
    i=1;
    while (i<=n)
     {if (f[f[i]]!=i) break; 
      i++;
     }
    if (i==n+1) printf("ambiguous\n");
    else printf("not ambiguous\n");
    scanf("%d",&n);    
  }    
}

[TripleM_sof]

while (i<n+1) {scanf("%d",f); i++;}

Something is wrong there.. try printing out the values in f after you've read them in and you'll see what it is

[mealer]

Thank you very much!