Nth minimum element in a array

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#include <stdio.h>
int main()
{
    int arr[10],i,j,n,temp,a,min;
    printf("enter the length of array : ");
    scanf("%d",&a);
    printf("enter the array elements : ");
    for(i=0;i<a;i++)
    {
        scanf("%d",&arr[i]);
    }
    printf("Enter the 'n'th min value to find : ");
    scanf("%d",&n);
   for(i=1;i<a;i++) //insertion sort
   {
       temp=arr[i];
       j=i-1;
       while (j>=0 && arr[j]>temp)
       {
           arr[j+1] = arr[j];
           j = j-1;
       }
       arr[j+1] = temp;
   }
    printf("the minimum element in the given pos in array is : %d",arr[n-1]);
    return 0;
}