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Question 2: Write a C++ program to: Declare and initialize an array of 10 integers. Calculate and print the sum of all elements. Calculate and print the average of all elements.

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← Previous Question 1: Write a C++ program to perform the following operations on an array: Declare and initialize an array of 5 integers. Access and print each element using a loop. Modify the third element of the array. Print the modified array.

📌 Information & Algorithm

Given Input:

Expected Output:

💻 Program Code

#include <iostream>
using namespace std;

int main() {
    // Declare and initialize array
    int arr[10] = {5, 10, 15, 20, 25, 30, 35, 40, 45, 50};

    int sum = 0;

    // Calculate sum
    for (int i = 0; i < 10; i++) {
        sum += arr[i];
    }

    // Calculate average
    double average = (double)sum / 10;

    // Print results
    cout << "Sum of elements: " << sum << endl;
    cout << "Average of elements: " << average << endl;

    return 0;
}
← Previous Question 1: Write a C++ program to perform the following operations on an array: Declare and initialize an array of 5 integers. Access and print each element using a loop. Modify the third element of the array. Print the modified array.
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📌 Topic Information
Subject C++ language
Chapter Array in C++
Sub-Chapter Array in C++
Modified 02 Nov 2026
Published 18 Oct 2026

⚡ Quick Practice Flow

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  • Read the topic carefully
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  • Practice by modifying logic

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Errors in the Given Program