Question

Give the definition for the constructor discussed at the end of the previous section. The constructor is to be added to the class Money in Display 11.5 The definition begins as follows: Money::Money(double amount) {

Short answer

Answer: The constructor in the class Money converts the double input amount into dollars and cents by first multiplying the input amount by 100 and rounding it to the nearest whole number to get the total cents. Then, it calculates the number of dollars by dividing the total cents by 100 and obtains the remaining cents using the modulus operator.

Step-by-step solution

Initialize Constructor

In the class Money, we'll start by initializing the constructor with the given code: ``` Money::Money(double amount) { } ```

Convert the Amount to Cents

Next, we will convert the given amount of money into cents. Here, we will multiply the input amount by 100, rounding it to the nearest whole number, as cents are represented as integers. ``` Money::Money(double amount) { // Convert dollars to cents and round to the nearest whole number int totalCents = static_cast(round(amount * 100)); } ```

Calculate Dollars and Cents

Now we can obtain the dollars and cents separate from the total cents. To find the number of dollars, we will divide the total cents by 100. To find the remaining cents, we will use the modulus operator. ``` Money::Money(double amount) { // Convert dollars to cents and round to the nearest whole number int totalCents = static_cast(round(amount * 100)); // Find the number of dollars and the remaining cents dollars = totalCents / 100; cents = totalCents % 100; } ``` Now, the constructor is defined and should correctly initialize the class Money with the given double amount.