Question

Write a program that reads in lines from standard input with each line containing a name and two integers and then prints a table with a column of the names, the integers, and the result of dividing the first by the second, accurate to three decimal places. You could use a program like this to tabulate batting averages for baseball players or grades for students. Should see: Name 1 Name 2 Name 3 20 10 20 30 35 100 0.666 0.333 0.200

*Please use StdIn. not Scanner. Thanks

Answer 1

• For input Console is used as StdIn, Scanner is not used.
• Code snippet is provided below the typed code.
• Output snippet is also attached at the end.
• NOTE: This program may not run on any IDE, you have to use console or terminal for this as it requires console for stdIn.

Program:

public class MainClass
{
    public static void main(String[] args)
    {
        // Reading input from stdIn using console
        // NOTE: This will not work in IDE
        // This will require std input
        String line1 = System.console().readLine();
        String line2 = System.console().readLine();
        String line3 = System.console().readLine();

        // Splitting input line into name and two integers
        String[] name1 = line1.split(" ");
        String[] name2 = line1.split(" ");
        String[] name3 = line1.split(" ");

        // integer variables to store 2 integers
        int a, b;
        // parsing 2 integers for 1st input line
        a = Integer.parseInt(name1[1]);
        b = Integer.parseInt(name1[2]);
        // printing in required format
        System.out.println(name1[0] + "\t" +a+"\t"+b+"\t"+String.format("%.3f",(double)a/b));
        /* Repeating same steps for other 2 input lines */
        a = Integer.parseInt(name2[1]);
        b = Integer.parseInt(name2[2]);
        System.out.println(name2[0] + "\t" +a+"\t"+b+"\t"+String.format("%.3f",(double)a/b));
        a = Integer.parseInt(name3[1]);
        b = Integer.parseInt(name3[2]);
        System.out.println(name3[0] + "\t" +a+"\t"+b+"\t"+String.format("%.3f",(double)a/b));
    }
}

Program Snippet:

2 5 7 MainClass.java public class MainClass { 3 public static void main(String[] args) 4. { // Reading input from stdIn using console // NOTE: This will not work in IDE // This will require std input String line1 = System.console().readLine(); String line2 = System.console().readLine(); String line3 = System.console().readLine(); 11 // Splitting input line into name and two integers 13 String[] name1 = line1.split( regex: "); 14 String[] name2 = line1.split( regex: 15 String[] name 3 = line1.split( regex: "); 16 8 9 10 12

17 18 19 20 21 22 23 // integer variables to store 2 integers int a, b; // parsing 2 integers for 1st input line a = Integer.parseInt(name1[1]); b = Integer.parseInt(name1[2]); Il printing in required format System.out.println(name1[@] + "\t" +a+"\t"+b+"\t"+String.format("%.3f", (double)a/b)); /* Repeating same steps for other 2 input lines */ a = Integer.parseInt(name2[1]); b = Integer.parseInt(name2[2]); System.out.println(name2[%] + "\t" +a+"\t"+b+"\t"+String.format("%.3f", (double)a/b)); a = Integer.parseInt(name 3[1]); b = Integer.parseInt(name3[2]); System.out.println(name 3[@] + "\t" +a+ '\t"+String.format("%.3f", (double) a/b)); 24 25 26 27 28 29 30 31 } 32 } 33

Output Snippet:

Terminal: Local + The system cannot find the path specified. C:\Users\Sumit's\IdeaProjects\Cheggsolutions\src>javac Main.java C:\Users\Sumit's\IdeaProjects\CheggSolutions \src>java Mainclass Name1 20 30 Name 2 10 35 Name 3 20 100 Name 1 20 30 0.667 Name 1 20 30 0.667 Name 1 20 30 0.667 3 mm

I hope you got the provided solution.

Thank You.