Question

This exercise requires designing a program which solves the problem described in the problem statement below. Provide comments as necessary in your pseudo-code and the Java program.

Your solution must include these components:

1. Flowchart
2. Pseudo-code
3. Hierarchy Chart
4. Program Coded
5. Program Output

Problem Statement

A painting company has determined that to paint 115 square feet of wall space, the task will require one gallon of paint and 8 hours of labor. The company charges $20.00 per hour for labor. Design a modular program that asks the user to enter the number of square feet of wall space to be painted and the price of paint per gallon. The program should then calculate and display the following data:

• The number of gallons of paint required
• The hours of labor required
• The cost of the paint
• The labor charges
• The total cost of the paint job

Expected Output

Enter wall space in square feet: 500

Enter price of paint per gallon: 25.99

Gallons of paint: 4.3478260869565215

Hours of labor: 34.78260869565217

Paint charges: $112.99999999999999

Labor charges: $695.6521739130435

Total Cost: $808.6521739130435

Your program should contain only the following modules:

• Module main. Accepts user input of the wall space (in square feet) and the price of a gallon of paint. Calculates the gallons of paint needed to paint the room, the cost of the paint, the number of labor hours needed, and the cost of labor. Calls summaryPaint, passing variables assigned the gallons paint needed to paint the room, the cost of the paint, the number of labor hours needed and the labor charges as arguments.

• Module summary Paint. Accepts the gallons of paint needed, the cost of the paint, the number of labor hours needed, and the cost of labor. Calculates and displays total cost of the job and statistics shown in the Expected Output. Note that numbers in your output may not be exactly as shown.

Answer 1

Flow chart

Start Take input wall space Take input print galon Calculate no. of galon used to print the wall Calculate no. of hours of labour Calculate total charge of paint Calculate total labour charge Calculate total charge to paint the wall End

Pseudocode

This program calculates the price of paint per gallon used to paint a wall.

Take input wall space from the user in square feet and store it to a.

Take another input price of paint per gallon and store it in b.

No. of gallon of paint used to paint given wall = 1.0/(115 * a).

No. of hours of labour needed to paint the wall = 8.0*(115 * b).

Total charge of paint = no. of gallon * price of gallon and labour charge = total no. of labour hours * $20.0.

Total charge needed to paint given wall = paint charge + labour charge.

Program code

import java.util.Scanner;
public class Main{
public static void main(String []args){
  
System.out.println("Enter wall space in square feet :");
double a;
  
Scanner sc = new Scanner(System.in);
a = sc.nextFloat();
  
System.out.println("Enter price of paint per gallon :");
double b;
b = sc.nextFloat();
  
double gallon = (1.0/115)*a;
System.out.println("Gallons of paint : " + gallon);
  
double labour = (8.0/115)*a;
System.out.println("Hours of labour : "+ labour );
  
System.out.println("Paint charges : $" + b*gallon );
  
System.out.println("Labour charge : $" + labour* 20.0);
  
double total = summaryPaint(gallon,b , labour , 20.0) ;
System.out.println("Total cost : $" + total );
}


public static double summaryPaint(double gallon , double paintcost , double labourHours , double labourcost)
{
return gallon*paintcost + labourHours*labourcost ;
}
}

Hierarchy chart

main summarypaint(double gallon, double paintcost, double labourHours , double labourcost))