Mufasa Mufasa - 4 months ago 12
Java Question

Write a program to read two numbers, the first less than the second. The program will write all numbers between the two numbers

//So I wrote this: (the output down there)

import java.util.Scanner;
public class E7L6{
public static void main(String[]args){
int num1, num2;
Scanner keyboard= new Scanner(System.in);
System.out.print("Type two numbers:");
num1= keyboard.nextInt();
num2= keyboard.nextInt();

if(num1<num2){
while(num1<=num2){
int counter=num1;
System.out.print(counter+" "+num2);
counter=counter+1;
}}
else{
System.out.print("Error: the first number must be smaller than the second");
}
}}

Output:
----jGRASP exec: java E7L6
Type two numbers:4 124
4 4 4 4 4 4 4 4 4
----jGRASP: process ended by user.


//so many number 4 repeating can someone tell me where am i wrong? thanks!!

Answer
  while(num1<=num2){
   int counter=num1;
   System.out.print(counter+" "+num2);
   counter=counter+1;
  }

This will end up in infinite loop. The condition for the while loop needs to be modified.

// modified code - Complete code.

import java.util.Scanner;

public class E7L6 {
    public static void main(String[] args) {
        int num1, num2;
        Scanner keyboard = new Scanner(System.in);
        System.out.print("Type two numbers:");
        num1 = keyboard.nextInt();
        num2 = keyboard.nextInt();

        if (num1 < num2) {
            int counter = num1;
            while (counter <= num2) {
                System.out.print(counter + " ");
                counter = counter + 1;
            }
        } else {
            System.out
                    .print("Error: the first number must be smaller than the second");
        }
    }
}
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