Question

Write the C++ code to display N even numbers.
int N;
cout<<"N:";cin>>N;
for(int i=1;i<=N;i++)
cout<<2*i<<":";​

Answer 1

Explanation:

#include <iostream>

using namespace std;

int main()

{

int i, n, sum = 0;

cout << "\n\n Display n terms of even natural number and their sum:\n";

cout << "-----------------------\n";

cout << " Input number of terms: ";

cin >> n;

cout << "\n The even numbers are: ";

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

{

cout << 2 * i << " ";

sum += 2 * i ;

}

cout << "\n The Sum of even Natural Numbers upto " << n << " terms: " << sum << endl;

}