Problem: Write a program that demonstrates passing an array as a parameter to a function. The program should include a function that receives an array and calculates the sum of its elements.

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#include <iostream> // Function to calculate the sum of an array int calculateSum(int arr[], int size) {    int sum = 0;    for (int i = 0; i < size; i++) {        sum += arr[i];    }    return sum; } int main() {    const int size = 5;    int arr[size] = {1, 2, 3, 4, 5};    int sum = calculateSum(arr, size);    std::cout << "Sum of array elements: " << sum << std::endl;    return 0; }

In this example, we define a function called calculateSum that takes an array arr and its size as parameters. Inside the function, we iterate over the array elements and calculate their sum.

In the main function, we declare an array arr with size 5 and initialize it with values. We then call the calculateSum function, passing arr and its size as arguments. The returned sum is stored in the sum variable.

Finally, we print the sum of the array elements.

By running the program, you'll see the sum of the array elements displayed on the console.

You can modify and expand this code to practice other operations with arrays as parameters, such as finding the average, searching for an element, or modifying the array elements within the function.