Find Sum of Series 1 ^ 2 | C ++ Program to find sum of series 1 ^ 2 - 2 ^ 2 + 3 ^ 3 - 4 ^ 4 + ... ; Function to find sum of series ; If n is even ; If n is odd ; return the result ; Driver Code ; Get n ; Find the sum ; Get n ; Find the sum
#include <bits/stdc++.h> NEW_LINE using namespace std ; int sum_of_series ( int n ) { int result = 0 ; if ( n % 2 == 0 ) { result = - ( n * ( n + 1 ) ) / 2 ; } else { result = ( n * ( n + 1 ) ) / 2 ; } return result ; } int main ( void ) { int n = 3 ; cout << sum_of_series ( n ) << endl ; n = 10 ; cout << sum_of_series ( n ) << endl ; }