Question

write a program in c ++ to calculate the sum of the following series​

Answer 1

#include <iostream>

using namespace std;

int main()

{

int i, n, sum = 0;

cout << "\n\n Find the sum of the series (1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n):\n";

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

cout << " Input the value for nth term: ";

cin >> n;

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

{

sum += i * i;

cout << i << "*" << i << " = " << i * i << endl;

}

cout << " The sum of the above series is: " << sum << endl;

}