C++ program to find the sum of the series (1*1) + (2*2) + (3*3) + (4*4) + (5*5) + … + (n*n)

C++Server Side ProgrammingProgramming

In this tutorial, we will be discussing a program to find the sum of the given series (1*1) + (2*2) + (3*3) + (4*4) + (5*5) + … + (n*n).

For this, we will be given with the value of n and our task is to add up every term starting from the first one to find the sum of the given series.

Example

#include <iostream>
using namespace std;
//calculating the sum of the series
int calc_sum(int n) {
int i;
int sum = 0;
for (i = 1; i <= n; i++)
sum += (i * i);
return sum;
}
int main() {
int n = 7;
int res = calc_sum(n);
cout << res << endl;
return 0;
}

Output

140
Published on 21-Nov-2019 13:11:21