Question

Write a java program called ImperialMetric that displays a conversion table for feet
and inches to metres. The program should ask the user to enter the range of values that
the table will hold.
Here is an example of what should be output when the program runs:
Enter the minimum number of feet (not less than 0):
5
Enter the maximum number of feet (not more than 30):
9

| | | | | |

0" 1.524 1.829 2.134 2.438 2.743

1" 1.549 1.854 2.159 2.464 2.769

2" 1.575 1.880 2.184 2.489 2.794

3" 1.600 1.905 2.210 2.515 2.819

4" 1.626 1.930 2.235 2.540 2.845

5" 1.651 1.956 2.261 2.565 2.870

6" 1.676 1.981 2.286 2.591 2.896

7" 1.702 2.007 2.311 2.616 2.921

8" 1.727 2.032 2.337 2.642 2.946

9" 1.753 2.057 2.362 2.667 2.972

10" 1.778 2.083 2.388 2.692 2.997

11" 1.803 2.108 2.413 2.718 3.023

5' 6' 7' 8' 9'

The sample solution used to generate the above example and the automarker scripts
uses System.out.printf() with a format string of "%6.3f" to print the metric values.
We recommend the following formula:
double metres = (feet*12+inches)*0.0254;

Answer 1

Solution: The required java code has been provided below, along with the output. Comments have been placed to depict the functionality.

main() has been implemented to complete the test.

import java.util.*;

public class PrintfTest
{

        public static void main (String arg[])
        {
     //declare variables
     int minfeet, maxfeet;
     double metres;

     //Scanner to ask user input
     Scanner reader = new Scanner(System.in);

     System.out.println("Enter the minimum number of feet(not less than 0)");
     minfeet = reader.nextInt();

        System.out.println("Enter the maximum number of feet(not more than 30)");
     maxfeet = reader.nextInt();

     //print the inches
     System.out.printf("| ");
    for (int i =0;i<12;i++)
    {
        System.out.printf(i+"''   ");

    }

    //print the minimum feet
    System.out.printf(minfeet+"'"+"\n");
    

    //Nested loop to calculate the metres and display
    for (int j=minfeet;j<=maxfeet;j++)
    {
      System.out.printf("|");
      for (int i=0;i<12;i++)
        {
        metres = ((j*12)+i) * 0.0254;

        //Use formatted output
        System.out.printf("%6.3f",metres);
                 }
                if (j+1 < (maxfeet + 1))
                {
                System.out.printf("   "+(j+1)+"'"+"\n"); 
            }
            if (j+1 == maxfeet + 1)
                {System.out.println("");}
          
        }
}       
}

Output:

Enter the minimum number of feet(not less than 0)
5
Enter the maximum number of feet(not more than 30)
9
| 0''       1''       2''       3''      4''       5''      6''       7''       8''      9''      10''     11''       5'
| 1.524 1.549 1.575 1.600 1.626 1.651 1.676 1.702 1.727 1.753 1.778 1.803   6'
| 1.829 1.854 1.880 1.905 1.930 1.956 1.981 2.007 2.032 2.057 2.083 2.108   7'
| 2.134 2.159 2.184 2.210 2.235 2.261 2.286 2.311 2.337 2.362 2.388 2.413   8'
| 2.438 2.464 2.489 2.515 2.540 2.565 2.591 2.616 2.642 2.667 2.692 2.718   9'
| 2.743 2.769 2.794 2.819 2.845 2.870 2.896 2.921 2.946 2.972 2.997 3.023