Program : Compute the sum of all elements in a 1-D array in C++

Solution :

#include <iostream>
using namespace std;

int main() {
    const int size = 5; // Change the size to fit your array
    int arr[size],i,sum=0;

    // Input the array elements
    cout << "Enter " << size << " elements of an array:\n";
    for (i = 0; i < size; i++) {
        cin >> arr[i];
    }

    // Compute the sum of array elements
    for (i = 0; i < size; i++) {
        sum += arr[i];
    }

    // Output the sum
    cout << "Sum of array elements: " << sum;

    return 0;
}

Output :

Enter 5 elements of an array:
3
7
2
9
5
Sum of array elements: 26

Dry Run :

So, the final value of “sum” is 26 and it will print 26.

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