IT210 R5 appendix b

Associate Program Material
Appendix B

Input and Output Process Example

The following example explains how to write a program that calculates the cost of painting a room. If the user provides the price of a gallon of paint; the number of square feet one gallon of paint covers; and the length, height, and width of the room, you can calculate the total cost of painting the room.

To calculate the total cost, determine the room area and divide the area to be painted by the number of square feet one gallon of paint covers. Then, multiply the number of gallons needed by the price per gallon to find the total cost. Provide the total cost to the user.

The following chart illustrates the data input and output process:
Input
Process
Output
Price
Square feet per gallon
Width
Length
Height
Get user input.
Price
Square feet per gallon
Width
Length
Height

Length
Height
Width

Find room area.
Total area

Square feet per gallon
Total area

Divide the area.
Gallons needed

Gallons needed
Price

Multiply gallons.
Total cost

Price
Square feet per gallon
Width
Length
Height
Total cost

Display the total.
Total cost