Design and implement program that implements the following 3 methods: - Method isValid(...) returns true if the sum of the width and height is greater than 30 boolean isValid (double width, double height){} - Method Area ( ...) returns the area of the rectangle if it is a valid rectangle double Area (double width, double height){} - Method Perimeter(...) returns the perimeter of the rectangle if it is a valid rectangle double Perimeter (double width, double height) { }

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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language is c++ using calling methods. Sample output included with the user input in bold 

Sample output:
Enter width: 4.0
Enter height: 5.0
This is an invalid rectangle
Do you want to enter another width and height (Y/N)? : Y
Enter width: 20.0
Enter height: 15.0
This is a valid rectangle
The area is: 300.0
The perimeter is: 70.0
Do you want to enter another width and height (Y/N)? : N
Program Ends
Transcribed Image Text:Sample output: Enter width: 4.0 Enter height: 5.0 This is an invalid rectangle Do you want to enter another width and height (Y/N)? : Y Enter width: 20.0 Enter height: 15.0 This is a valid rectangle The area is: 300.0 The perimeter is: 70.0 Do you want to enter another width and height (Y/N)? : N Program Ends
Lab11B: Rectangled Decision!
Design and implement program that implements the following 3 methods:
- Method isValid(...) returns true if the sum of the width and height is greater than 30
boolean isValid(double width, double height) { }
- Method Area (...) returns the area of the rectangle if it is a valid rectangle
double Area (double width, double height){ }
- Method Perimeter(...) returns the perimeter of the rectangle if it is a valid rectangle
double Perimeter(double width, double height){}
Always remember that in Java and C#, the methods must be public and static
The main method should prompt the user to enter the width and height of a rectangle (double values)
and uses the methods to print out a message followed by the area and perimeter if the rectangle is
valid. Otherwise, it prints out only the message “ This is an invalid rectangle."
Note: that method isValid ( ...) is used to validate the input before attempting to compute the area
and perimeter.
Design the main method in the test program such that it allows the user to re-run the program
with different inputs (using a sentinel loop structure).
Remember, the class name should be Lab11B.
The user input is indicated in bold.
Transcribed Image Text:Lab11B: Rectangled Decision! Design and implement program that implements the following 3 methods: - Method isValid(...) returns true if the sum of the width and height is greater than 30 boolean isValid(double width, double height) { } - Method Area (...) returns the area of the rectangle if it is a valid rectangle double Area (double width, double height){ } - Method Perimeter(...) returns the perimeter of the rectangle if it is a valid rectangle double Perimeter(double width, double height){} Always remember that in Java and C#, the methods must be public and static The main method should prompt the user to enter the width and height of a rectangle (double values) and uses the methods to print out a message followed by the area and perimeter if the rectangle is valid. Otherwise, it prints out only the message “ This is an invalid rectangle." Note: that method isValid ( ...) is used to validate the input before attempting to compute the area and perimeter. Design the main method in the test program such that it allows the user to re-run the program with different inputs (using a sentinel loop structure). Remember, the class name should be Lab11B. The user input is indicated in bold.
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