Chapter 11.1, Problem 4STE

Explanation of Solution

Function declaration:

// Declaration of subtract() function

friend Money subtract(Money amount1, Money amount2);

The above function declaration is the “subtract()” friend function.

• In the class “Money”, add the declaration part in the “public” section below the “equal()” function declaration.

Function definition:

// Definition of substract() function

Money subtract(Money amount1, Money amount2)

{

  // Create an object for Money class

  Money temp;

  // Compute amount and assign to temp...