In: Computer Science
Write a Java program that reads a whole number on the keyboard and obtains and displays twice and triple that number on the screen
import java.util.Scanner;
public class WholeNumber {
public static void main(String[] args) {
int wholeNumber;
Scanner sc = new Scanner(System.in);
// reading whole number until valid entry
while(true) {
System.out.print("Enter a whole number : ");
wholeNumber = sc.nextInt();
// if number is valid then break
if(wholeNumber >= 0)
break;
System.out.println(wholeNumber + " is not a whole number");
}
// doubling the number
int twice = 2 * wholeNumber ;
System.out.println("Twice of "+wholeNumber+" = "+twice);
// tripling the number
int triple = 3 * wholeNumber;
System.out.println("Triple of "+wholeNumber+" = "+triple);
sc.close();
}
}
Code
Output