sum of elements in c++ stl
accumulate(a.begin(), a.end(), 0)Array sum in c++ stl
// C++ program to demonstrate working of accumulate()
#include <iostream>
#include <numeric>
using namespace std;
// User defined function that returns sum of
// arr[] using accumulate() library function.
int arraySum(int a[], int n)
{
int initial_sum = 0;
return accumulate(a, a+n, initial_sum);
}
int main()
{
int a[] = {5 , 10 , 15} ;
int n = sizeof(a)/sizeof(a[0]);
cout << arraySum(a, n);
return 0;
}sum function in c++
// C++ program to demonstrate
// example of sum() function.
#include <bits/stdc++.h>
using namespace std;
int main()
{
// Initializing valarray
valarray<int> varr = { 15, 10, 30, 33, 40 };
// Displaying sum of valarray
cout << "The sum of valarray is = "
<< varr.sum() << endl;
return 0;
}Copyright © 2021 Codeinu
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