Question

2. Write a program to do the following: • ask the user to input the size of an array of integers and allocate space for the array • ask the user to input the integer values for the array and store these values into the array • calculate and display the sum and the average of elements of the array.

Answer 1

#include <iostream>

using namespace std;

int main() {
    int n;
    cout << "How many numbers do you want to enter? ";
    cin >> n;
    int *arr = new int[n];
    for (int i = 0; i < n; ++i) {
        cin >> arr[i];
    }
    int sum = 0;
    for (int j = 0; j < n; ++j) {
        sum += arr[j];
    }
    cout << "Sum of entered numbers is " << sum << endl;
    cout << "Average of entered numbers is " << sum/(double)n << endl;
    delete[] arr;
    return 0;
}