Array sum in c++ stl

SJ answered on May 17, 2020 Popularity 10/10 Helpfulness 6/10

answer Array sum in c++ stl

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Array sum in c++ stl

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// 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;
}

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Source: www.geeksforgeeks.org

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Contributed on Jan 30 2022

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accumulate(a.begin(), a.end(), 0)

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Source: Grepper

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Contributed on May 17 2020

Uninterested Unicorn

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sum of array in C++

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#include <iostream>
using namespace std;

class ArrayCalculator {
public:
	static int sumOfArray(int arr[], int n) {
		int sum = 0;
		for (int i = 0; i < n; i++) {
			sum += arr[i];
		}
		return sum;
	}

	static double sumOfArray(double arr[], int n) {
		double sum = 0;
		for (int i = 0; i < n; i++) {
			sum += arr[i];
		}
		return sum;
	}
};

int main() {
	int arr1[] = { 3, 4, 2 };
	double arr2[] = { 1.3, 4.2, 6.7 };
	cout << ArrayCalculator::sumOfArray(arr1, sizeof(arr1) / sizeof(int)) << endl;
	cout << ArrayCalculator::sumOfArray(arr2, sizeof(arr2) / sizeof(double)) << endl;
	return 0;
}

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Source: codelearn.io

Tags: c++ sum

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Contributed on Jun 19 2023

Haidang Leo

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Array sum in c++ stl

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