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.
#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;
}
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.