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

C++

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/* 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

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C

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/* 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;
}

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Java

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/* 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());
        }
 }

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Python3

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# 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

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C#

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// 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.

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PHP

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<?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
?>

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Output :

Sum of given array is 34

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Improved By : jit_t, rathbhupendra