Why array doesn't print correct numbers?

[Arthuoff]

Following code:

#include <stdio.h>

int izbaciSveProste(int n, int x[], int y[])
{
    int i;
    int flag=0;

    for(i=2; i<n/2; i++)
    {
        if(n%i ==0)
        {
            flag =1;
            break;
        }
    }
    if(flag==1)
        return 0;
    else
        return 1;
}

int main()
{
    int i,j,n,x[100],y[100],dest=0;

    printf("Koliko elemenata zelite u polju?\n");
    scanf("%d", &n);

    printf("Unesite elemente:\n");
    for(i=0;i<n;i++)
    {
    scanf("%d",&x[i]);
    }

    int len = sizeof(x)/sizeof(x[0]);

    for(i=0; i<len; i++)
    {
    if(izbaciSveProste(n,x[i],y[i]))
    {
    y[dest++]=x[i];
    for(j=i; j<len-1; j++)
    {
    x[j] = x[j+1];
    y[dest++]=x[j];
    }
    i--;
    len--;
    }
    }
    printf("Elementi nakon brisanja su:\n");
    for(i=0; i<dest; i++)
    printf("%d\n",y[i]);;

    printf("\n");

    return 0;
}

Purpose of this program should be to delete all prime numbers from array x[] with n elements, remaining elements should be rewritten in array y[] and show count of elements in array y[] in the end.I believe that function is okay and error is in main() specifically in storing y[].

[Salem]

The first step would be learning how to indent code.

#include <stdio.h>

int izbaciSveProste(int n, int x[], int y[])
{
  int i;
  int flag = 0;

  for (i = 2; i < n / 2; i++) {
    if (n % i == 0) {
      flag = 1;
      break;
    }
  }
  if (flag == 1)
    return 0;
  else
    return 1;
}

int main()
{
  int i, j, n, x[100], y[100], dest = 0;

  printf("Koliko elemenata zelite u polju?\n");
  scanf("%d", &n);

  printf("Unesite elemente:\n");
  for (i = 0; i < n; i++) {
    scanf("%d", &x[i]);
  }

  int len = sizeof(x) / sizeof(x[0]);

  for (i = 0; i < len; i++) {
    if (izbaciSveProste(n, x[i], y[i])) {
      y[dest++] = x[i];
      for (j = i; j < len - 1; j++) {
        x[j] = x[j + 1];
        y[dest++] = x[j];
      }
      i--;
      len--;
    }
  }
  printf("Elementi nakon brisanja su:\n");
  for (i = 0; i < dest; i++)
    printf("%d\n", y[i]);;

  printf("\n");

  return 0;
}

> I believe that function is okay and error is in main() specifically in storing y[].
That's a good guess - go with it.

Now is a good time to investigate debuggers and follow how your y array changes over time.