Chapter 3, Problem 6CP

Explanation of Solution

Given: The following expression:

if radius >= 0

{

area = radius * radius * PI;

cout << "The area for the circle of " << " radius " << radius << " is " << area;

}

To find: The possible mistake in the expression:

if radius >= 0

{

area = radius * radius * PI;

cout << "The area for the circle of " << " radius " << radius << " is " << area;

}

Solution:

The possible mistake or error in the code is that the condition of the ‘if’ statement is not enclosed within parenthesis, and the variables radius, area, and PI are not declared. In order to run the code correctly, the following code should be written:

// Includes header files

#include

// Includes header files

#include