51-count_duplicate_elements.c

#include<stdio.h>
int main()
{
int n,i,j,count=0;
printf("Enter number of elements of array");
scanf(%d",&n);
int arr[n];
for(i=0;i<n;i++)
scanf("%d",&arr[i]);
for(i=0;i<n;i++)
{
for(j=i+1;j<n;j++)
{
if(arr[i]==arr[j]){
count++;
break;
}
}
}
printf("Duplicate elements = %d",count);
return 0;
}