Question

Trace the execution of the following program assuming the input stream contains the numbers 10, 3, and 14.3. Use a table that shows the value of each variable at each step. Also show the output (exactly as it would be printed)

// FILE: Trace.java // PURPOSE: An exercise in tracing a program and understanding // assignment statements and expressions. import java.util.Scanner; public class Trace { public static void main (String[] args) { int one, two, three; double what; Scanner scan = new Scanner(System.in); System.out.print ("Enter two integers: "); one = scan.nextInt(); two = scan.nextInt(); System.out.print("Enter a floating point number: "); what = scan.nextDouble() ; three = 4 * one + 5 * two; two = 2 * one; System.out.println ("one " + two + ":" + three); one = 46 / 5 * 2 + 19 % 4; three = one + two; what = (what + 2.5) / 2 ; System.out.println (what + " is what!"); } }

Answer 1

ANSWER:-

import java.util.Scanner;
public class Trace {
   public static void main (String[] args)
   {
       int one, two, three; // declaration of  three integer variable
       double what; // declaration of one double variable
       Scanner scan = new Scanner(System.in); // scanner class use for user input
       System.out.print ("Enter two integers: "); // message for user
       one = scan.nextInt(); // one take integer value by user  example one=10

two = scan.nextInt(); // two take integer value by user example two=3
       System.out.print("Enter a floating point number: "); // message for user
       what = scan.nextDouble() ; // one take double value by user  example what=14.3
       three = 4 * one + 5 * two; // three=4*10+5*3=40+15=55
       two = 2 * one; // two=2*10=20
       System.out.println ("one " + two + ":" + three); // output : one 20:55
       one = 46 / 5 * 2 + 19 % 4; // one = 9*2+3=18+3=21
       three = one + two; // three = 21+20=41

what = (what + 2.5) / 2 ; // what=(14.3+2.5)/2=16.8/2=8.4
       System.out.println (what + " is what!"); // output : 8.4 is what!

   }
  
}

OUTPUT:-

// If any doubt please comment