C#: Compute sum of all the elements of an array of integers

Last update on June 23 2025 12:58:37 (UTC/GMT +8 hours)

Sum of Array Elements

Write a C# program to compute sum of all the elements of an array of integers.

Pictorial Presentation:

>C# Sharp Exercises: Compute sum of all the elements of an array of integers

Sample Solution:

C# Sharp Code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

public class Exercise47
{  
    public static void Main() 
    {
        // Define an array of integers 'nums' with pre-defined values
        int[] nums = {1, 2, 2, 3, 3, 4, 5, 6, 5, 7, 7, 7, 8, 8, 1};

        // Display the elements of the 'nums' array using string.Join to concatenate them
        Console.WriteLine("\nArray1: [{0}]", string.Join(", ", nums));

        var sum = 0; // Initialize a variable 'sum' to accumulate the sum of array elements

        // Iterate through the elements of the 'nums' array using a for loop
        for (var i = 0; i < nums.Length; i++)
        {
            sum += nums[i]; // Add each element of the array to the 'sum' variable
        }

        // Display the sum of all elements in the array
        Console.WriteLine("Sum: " + sum);
    } 
}

Sample Output:

Array1: [1, 2, 2, 3, 3, 4, 5, 6, 5, 7, 7, 7, 8, 8, 1]                  
Sum: 69

Flowchart:

For more Practice: Solve these Related Problems:

Write a C# program to compute the sum of all even elements in an array.
Write a C# program to sum array elements ignoring any duplicates.
Write a C# program to calculate the sum of array elements that are not adjacent to each other.
Write a C# program to sum only the prime numbers present in an array.

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