Question

Write a program to print the sum of first n natural numbers.

Answer 1

#include<iostream> 

using namespace std; 

int main()

{ 

int n,i,sum=0; 

cout<<“Enter a value for n”;

cin>>n;

for(i=1;i<=n;i++)

{ 

sum = sum + i; 

} 

cout<<“The sum of first ” <<n<<"numbers is “<<sum;

}