CMIS 102 6382

September 28, 2014

A. Problem Analysis

• The purpose of the program is to calculate the area ,perimeter and diagonal length of a rectangle with dimensions (Length and width) are provided by a user.

• Input the values of length and width from the user

• For finding the area, the calculation is length * width

• For the perimeter, calculation is (length + width) * 2 .

• For finding the diagonal length , the formula is sqrt( length*length + width* width)

B. Program Design

Input/Output

The program will prompt user to input:

• Legth

• Width

Calculate the area

• Area= length * width

• Display the area

Calculate the perimeter

• Perimeter =( length + width) * 2 . • Display the perimeter

Calculate the diagonal length

• diagoanllength = sqrt( length*length + width* width) • Display the diagonal length

Pseudo Code
Start
Declare the variables length, width, area, perimeter, diagoanlLength as double
GetInput()
CalcArea()
CalcPerimeter()
CalcDiagonalLength()
Stop

Function GetInput()
Display “Enter the length and width “
Accept length, width
End Function

Function CalcArea() area= length * width
Display “The Area is :”,area
End Function

Function CalcPerimeter() perimeter = (length + width) * 2
Display “The Perimeter is :”, perimeter
End Function

Function CalcDiagonalLength() diagoanlLength = sqrt( length*length + width* width)
Display “The Diagonal Length is :”, diagoanlLength
End Function

Flowchart

Program Explanation

The Program is for finding the Area and Perimeter of a rectangle with the values required for the calculation getting from the user as length and width

This is a modular design, the main program includes the function calls and functions defined as sub programs

Here The main program contains three functions GetInput(), CalcArea(), CalcPerimeter() , CalcDiagonalLength()

The variables length, width, area, perimeter and diagoanlLength are declared as double.

GetInput() function accepting the values of length and width from the user

The function CalcArea() calculates the Area of a rectangle as the “ length * width” and displays the value of the Area

The function CalcPerimeter() defines the perimeter of a rectangle as “(length + width) * 2”
And displays the perimeter value as the result

The last function CalcDiagonalLength() defines the diagonal length of a rectangle as sqrt( length*length + width* width)” And displays the diagonal length value as the result

Test Data

|Test Data 1 | |
|Enter Length : 10 |The area is : 120 |
|Enter Width : 12 |The Perimeter is : 44 |
| |The diagonal length is : 15 |
|Test Data 2 | |
|Enter Length : 20 |The area is : 200 |
|Enter Width : 10 |The Perimeter is : 60 |
| |The diagonal length is : 22 |
|Test Data 3 | |
|Enter Length : 15 |The area is : 180 |
|Enter Width : 12 |The Perimeter is : 54 |
| |The diagonal length is : 19 |

-----------------------
RETURN

Accept length, width

Display “Enter the length and width “

GetInput() ()

CalcPerimeter()

CalcArea()

GetInput()

Integer length, width, area, perimeter

START

area= length * width

CalcArea()

Display “The Perimeter is :”, perimeter

RETURN

CalcPerimeter()

perimeter = (length + width) * 2

Display “The Area is :”,area

CalcDiagonalLength()

STOP

RETURN

CalcDiagonalLength()

diagoanlLength = sqrt( length*length + width* width)

Display “The diagonal length is :”, diagoanlLength

RETURN