what's wrong in this code

Question

I wanted to find if the integers are unique or repeated and if repeated then how many times. I want to display the repeated integer only one time to show its frequency.

#include <stdio.h>

int main()

{

int c=0,arr[10],i,j,m=0,k;

printf("Enter 4 integers :");

for(i=0; i<4;i++)

{

          scanf("%d",&arr[i]);

}

          for(i=0; i<4; i++)

          {

                 c=0;

                     for(j=0; j<4; j++)

                     {

                           if(arr[i]==arr[j])

                           {

                                 c++;

                             }

                    }

                     for(k=0; k<4; k++)

                    {

                              if(c>1)

                                  arr[k]=arr[i];

                  }

                              if(c>1)

                             {

                                     printf("\n%d was repeated %d times\n",arr[k],c);

                                      m=2;

                   }

        }

                  if(m==0)

                  {

                              printf(" All are Unique integers");

                  }

return 0;

}

Answer 1

#include <stdio.h>

int main ()
{
  int c = 0, arr[10], i, j, m = 0, k;

  printf ("Enter 4 integers :");

  for (i = 0; i < 4; i++)

    {

      scanf ("%d", &arr[i]);

    }

  for (i = 0; i < 4; i++)

    {

      c = 0;

      for (j = i+1; j < 4; j++)

    {

      if (arr[i] == arr[j])

          c=c+1;

    }

      if (c >= 1)

    {

      printf ("\n%d was repeated %d times\n", arr[i], c);

      m = 2;

    }

    }

  if (m == 0)

    {

      printf (" All are Unique integers");

    }

  return 0;

}