Sum of all elements up to Nth row in a Pascal triangle | C ++ program to find sum of all elements upto nth row in Pascal triangle . ; Function to find sum of all elements upto nth row . ; Initialize sum with 0 ; Loop to calculate power of 2 upto n and add them ; Driver function
#include <bits/stdc++.h> NEW_LINE using namespace std ; long long int calculateSum ( int n ) { long long int sum = 0 ; for ( int row = 0 ; row < n ; row ++ ) { sum = sum + ( 1 << row ) ; } return sum ; } int main ( ) { int n = 10 ; cout << " ▁ Sum ▁ of ▁ all ▁ elements : " << calculateSum ( n ) ; return 0 ; }