/C++/Write a CPP program to calculate sum of first N natural numbers

Write a CPP program to calculate sum of first N natural numbers

#include <iostream>

using namespace std;

int main(){
	int N,i,sum=0;
	cin>>N;
     for(i=0;i<=N;)
     {
         sum=sum+N;
        N--;
     }
     cout<<sum;
}

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