Q1

Write a single-file program (named main.cpp) that reads two separate integers from the user, adds them together, and then outputs the answer. The program should use three functions:

• A function named readNumber should be used to get (and return) a single integer from the user.
• A function named writeAnswer should be used to output the answer. This function should take a single parameter and have no return value.
• A main() function should be used to glue the above functions together.

Solution#

#include <iostream>

int readNumber()
{
    int num {};

    std::cout << "Enter a number: ";
    std::cin >> num;

    return num;
}

void writeAnswer(int num)
{
    std::cout << "The answer is: " << num << '\n';
}

int main()
{
    int x { readNumber() };
    int y { readNumber() };

    writeAnswer(x + y);

    return 0;
}