Use relational and logical operators to make decisions using selection structureUse switch statement to design a simple menu selection decision Task 2 Sample OutputGeometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 5Invalid selection!Geometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 4Geometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 1Radius of circle (m) : -1Negative value is not allowedGeometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 2Enter length of rectangle (m) : 4Enter width of rectangle (m) : -1Negative value is not allowedGeometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 1Enter radius of circle (m) : 6.2The area of the circle is: 120.76 m^2Geometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 3Enter base of triangle (m): 5.5Enter height of triangle (m) : 9The area of the triangle is: 24.75 m^2 Write a program GeometryCalculator.cpp that displays the following menu:Geometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1-4) :The menu must be constructed using the switch statement.If the user enters 1, the program should ask for the radius of the circle then display its area. Use thefollowing formula:area = n xX r2Use 3.14159 for a and the radius of the circle for r.If the user enters 2, the program should ask for the length and width of the rectangle, then displaythe rectangle's area. Use the following formula:area = length x widthIf the user enters 3, the program should ask for the length of the triangle's base and its height, thendisplay its area. Use the fo following formula:area = base x height x 0.5If the user enters 4, the program should end.Input validation: Display an error message if the user enters a number outside the range of 1through 4 when selecting an item from the menu. Do not accept negative values for the circle'sradius, the rectangle's length or width, or the triangle's base or height. Terminate the program ifthe user enters invalid input.Task 2 Sample OutputGeometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 5Invalid selection!Geometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 4Geometry Calculator:1. Calculate the Area of a Circle2. Calculate the Area of a Rectangle3. Calculate the Area of a Triangle4. QuitEnter your choice (1 - 4): 1Radius of circle (m) : -1Negative value is not allowed

Working of the program:- I keep the switch inside the while loop While loop will keep running…

Answered: Use relational and logical operators to…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Use relational and logical operators to make decisions using selection structure

Use switch statement to design a simple menu selection decision

Task 2 Sample Output
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 5
Invalid selection!
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 4
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 1
Radius of circle (m) : -1
Negative value is not allowed
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 2
Enter length of rectangle (m) : 4
Enter width of rectangle (m) : -1
Negative value is not allowed
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 1
Enter radius of circle (m) : 6.2
The area of the circle is: 120.76 m^2
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 3
Enter base of triangle (m): 5.5
Enter height of triangle (m) : 9
The area of the triangle is: 24.75 m^2

Write a program GeometryCalculator.cpp that displays the following menu:
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1-4) :
The menu must be constructed using the switch statement.
If the user enters 1, the program should ask for the radius of the circle then display its area. Use the
following formula:
area = n xX r2
Use 3.14159 for a and the radius of the circle for r.
If the user enters 2, the program should ask for the length and width of the rectangle, then display
the rectangle's area. Use the following formula:
area = length x width
If the user enters 3, the program should ask for the length of the triangle's base and its height, then
display its area. Use the fo following formula:
area = base x height x 0.5
If the user enters 4, the program should end.
Input validation: Display an error message if the user enters a number outside the range of 1
through 4 when selecting an item from the menu. Do not accept negative values for the circle's
radius, the rectangle's length or width, or the triangle's base or height. Terminate the program if
the user enters invalid input.
Task 2 Sample Output
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 5
Invalid selection!
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 4
Geometry Calculator:
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1 - 4): 1
Radius of circle (m) : -1
Negative value is not allowed

Expert Solution

Explaination

Working of the program:-

I keep the switch inside the while loop
While loop will keep running until choice of the user is 4 . When choice becomes 4 user exit.
I had created three separate functions in order to calculate the area they return the double value area.
After taking the input we have if to check if the value entered is greater than 0 and not negative
If negative we just give the false message and break
Else we call the function if all the values are postive and print the results.
After calling the function in switch statment i store the output in the local area variable and then display it.
Default case give errror message in case intput is not among 1,2,3 and 4.

Everything is mentioned in the code comments

Code and output is provided in the step 2

Also screenshots of the both are added .

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