1. Draw a console window and show the expected output as precisely as possible.

#include <iostream>
using namespace std;

void addSome(int &, int);

int main( )
{
    int number = 0;
    int amountToAdd = 3;
    int total = 0;

   addSome(number, amountToAdd);
   cout << number << endl;
   getUserInput(numBooks);
   cout << number << endl;
   cout << amountToAdd << endl;

   return 0;
}// end of main

void addSome(int & amount, int add)
{
   amount = amount + add;
   add = 5;
}// end of addSome

   

2. Draw a console window and show the expected output as precisely as possible. Assume that the user inputs the number 5 when prompted to input the number of books.

#include <iostream>
using namespace std;

void getUserInput(int & num);

int main()
{
    int numBooks = 0;

    getUserInput(numBooks);
    
    cout << "You owe $" << numBooks * 9.00 << endl;
  
    return 0;
}// end of main

void getUserInput(int & num)
{

      do
      {
           cout << "How many books would you like to buy? ";
           cin >> num;
      }while (num >= 50);

}// end of getUserInput

3. Write a program that includes a function named checkNum that receives a parameter that is passed by reference. The function must contain a loop that prompts the user to input an integer between or including 1 and 10 and obtains that input. If the value is not between or including 1 and 10, the function should display the message "Try again". The loop in the function should keep prompting the user to input a number until he has successfully inputted an integer between or including 1 and 10. After the user has eventually inputted an integer between or including 1 and 10, the main function should display that number.