Chapter 3.5, Problem 3.17CP

Explanation of Solution

Named constants:

In C++, constants represent fixed values and typically, they remain unchanged during program execution.

• Constants should be initialized at the time of their creation.
• New values cannot be assigned to them later.

Syntax to define the named constant:

const data_type qualifier_name = value;

Example:

// Constant declaration

const double PI_Value = 3.14;

Explanation:

It is similar to a variable declaration; however, it needs a keyword “const” before the data type. This keyword tells the compiler that the variable value is constant.

Named constant for given “const” qualifier:

Value 1:

Consider the given Euler’s constant value “2.71828” and its equivalent named constant will be as follows:

// Declare the constant value with double data type

const double EULER = 2.71828;

Explanation:

In the above statement, “const” is a keyword, double is a data type of the “const” qualifier and “EULER” is a name of the “const” qualifier.

Value 2:

Consider the given constant value “5.256E5” for minutes of a year and its equivalent named constant will be as follows:

// Declare the constant value with double data type

const double MINUTES = 5.256E5;

Explanation:

In the above statement, “const” is a keyword, double is a data type of the “const” qualifier and “MINUTES” is a name of the “const” qualifier...