Program to find sum of elements in a given array

Given an array of integers, find sum of its elements.

Examples :

Input : arr[] = {1, 2, 3}
Output : 6
1 + 2 + 3 = 6

Input : arr[] = {15, 12, 13, 10}
Output : 50

Recommended: Please solve it on “PRACTICE ” first, before moving on to the solution.

C++

/* C++ Program to find sum of elements  
in a given array */
#include <bits/stdc++.h> 
using namespace std; 
  
// function to return sum of elements  
// in an array of size n  
int sum(int arr[], int n)  
{  
    int sum = 0; // initialize sum  
  
    // Iterate through all elements  
    // and add them to sum  
    for (int i = 0; i < n; i++)  
    sum += arr[i];  
  
    return sum;  
}  
  
// Driver code 
int main()  
{  
    int arr[] = {12, 3, 4, 15};  
    int n = sizeof(arr) / sizeof(arr[0]);  
    cout << "Sum of given array is " << sum(arr, n);  
    return 0;  
}  
  
// This code is contributed by rathbhupendra 

C

/* C Program to find sum of elements 
 in a given array */
#include <bits/stdc++.h> 
  
// function to return sum of elements 
// in an array of size n 
int sum(int arr[], int n) 
{ 
    int sum = 0; // initialize sum 
  
    // Iterate through all elements  
    // and add them to sum 
    for (int i = 0; i < n; i++) 
    sum += arr[i]; 
  
    return sum; 
} 
  
int main() 
{ 
    int arr[] = {12, 3, 4, 15}; 
    int n = sizeof(arr) / sizeof(arr[0]); 
    printf("Sum of given array is %d", sum(arr, n)); 
    return 0; 
} 

Java

/* Java Program to find sum of elements in a given array  */
class Test 
{ 
     static int arr[] = {12,3,4,15}; 
       
     // method for sum of elements in an array  
     static int sum() 
     { 
         int sum = 0; // initialize sum 
         int i; 
        
         // Iterate through all elements and add them to sum 
         for (i = 0; i < arr.length; i++) 
            sum +=  arr[i]; 
        
         return sum; 
     } 
       
     // Driver method 
     public static void main(String[] args)  
     { 
         System.out.println("Sum of given array is " + sum()); 
        } 
 } 

Python3

# Python 3 code to find sum  
# of elements in given array 
def _sum(arr,n): 
      
    # return sum using sum  
    # inbuilt sum() function 
    return(sum(arr)) 
  
# driver function 
arr=[] 
# input values to list 
arr = [12, 3, 4, 15] 
  
# calculating length of array 
n = len(arr) 
  
ans = _sum(arr,n) 
  
# display sum 
print ('Sum of the array is ',ans) 
  
# This code is contributed by Himanshu Ranjan 

C#

// C# Program to find sum of elements in a 
// given array  
using System; 
  
class GFG {  
      
    // method for sum of elements in an array  
    static int sum(int []arr, int n) 
    { 
          
        int sum = 0; // initialize sum 
          
        // Iterate through all elements and  
        // add them to sum 
        for (int i = 0; i < n; i++) 
            sum += arr[i]; 
          
        return sum; 
    } 
      
    // Driver method 
    public static void Main()  
    { 
          
        int []arr = {12,3,4,15}; 
        int n = arr.Length; 
          
        Console.Write("Sum of given array is "
                               + sum(arr, n)); 
    } 
  
} 
  
// This code is contributed by Sam007. 

PHP

<?php 
// PHP Program to find sum of  
// elements in a given array  
  
// function to return sum  
// of elements in an array 
// of size n 
function sum( $arr, $n) 
{ 
    // initialize sum 
    $sum = 0;  
  
    // Iterate through all elements  
    // and add them to sum 
    for ($i = 0; $i < $n; $i++) 
    $sum += $arr[$i]; 
  
    return $sum; 
} 
  
// Driver Code 
$arr =array(12, 3, 4, 15); 
$n = sizeof($arr); 
echo "Sum of given array is ",  
                sum($arr, $n); 
  
// This code is contributed by aj_36 
?> 

Output :

Sum of given array is 34

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Improved By : jit_t, rathbhupendra

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