how to find unique integers and repeated integers

Question

I wanted to know how should I Find out the unique integers and repeated integers. I have somehow found the repeated integers with their frequency. But how should I do the rest?

#include <stdio.h>

int main()
{

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

printf("Enter 10 integers :");

     for(i=0; i<10;i++)
    {
        scanf("%d",&arr[i]);
    }

    for(i=0; i<10; i++)
    {
       c=0;

      for(j=0; j<10; j++)
     {
        if(arr[i]==arr[j])
        {
              c++;
        }
      }

      if(c>1)
      {
          printf("\n%d was repeated %d times\n",arr[i],c);
       }
   }

return 0;

}

Answer 1

#include <stdio.h>

int main()
{

    int c=0,arr[10],i,j,m=0;

    printf("Enter 10 integers :\n");

    for(i=0; i<10;i++)
    {
        scanf("%d",&arr[i]);
    }

    for(i=0; i<10; i++)
    {
        c=1;
 

        //add the number of times the value of arr[i] exists after i
        for(j=i+1; j<10; j++)
        {
            if(arr[i]==arr[j])
            {
                c++;
            }
        }
        
        //if the value of arr[i] exists before i it has been treated already
        for (j=0; j<i; j++)
        {
            if(arr[i]==arr[j])
            {
                c=0;
            }
        }

        if(c>1)
        {
            printf("\n%d was repeated %d times\n",arr[i],c);
        }
        else if (c==1)
        {
            printf("\n%d was unique\n");
        }
    }

    return 0;
}