Introduction
I have used CodeBlocks compiler for debugging purpose. But you can use any C++ programming language compiler as per your availability.
Write C++ program to count total duplicate elements in an array
#include <iostream>
using namespace std;
int main()
{
int arr[100];
int i, j, n, count = 0;
// Readinng size of the array
cout<<"Enter size of the array : ";
cin>>n;
//Reading elements of array
cout<<"Enter elements in array : ";
for(i=0; i<n; i++)
{
cin>>arr[i];
}
//Find all duplicate elements in array
for(i=0; i<n; i++)
{
for(j=i+1; j<n; j++)
{
// If duplicate element found then increment count by 1
if(arr[i] == arr[j])
{
count++;
break;
}
}
}
cout<<"\nTotal number of duplicate elements found in array: "<<count;
return 0;
}
Result
