Input an int between 0 and 100 and print the numbers between it and 100, including the number itself and the number 100. If the number is less than or equal to 0, or greater than or equal to 100 print "error". Print 20 numbers per line. Language: Java

The pentagonal number is an illustration of loops.

Loops are used to perform repetitive operations

The program in Java where comments are used to explain each line is as follows:

import java.util.*;

public class Main {

   public static void main(String[] args) {

       //This creates a Scanner object

       Scanner input = new Scanner(System.in);

       //This gets input for num

       int num = input.nextInt();

       //This prints error is num is out of range

       if(num <=0 || num >= 100){

           System.out.print("Error");

       }

       else{

       //This initializes counter to 0

       int count = 0;

       //This iterates through num

       for (int i = num; i <= 100; i++) {

           //This prints the current number

           System.out.print((i)+"\t");

           //This increments the counter by 1

           count++;

           //If the counter is 10

           if(count == 10){

               //This prints a new line

               System.out.println();

               //This sets the counter to 0

               count = 0;

}

}

}    

}

}

Read more about loops at:

link

import java.util.Scanner;

public class JavaApplication42 {

   public static void main(String[] args) {

       Scanner scan = new Scanner(System.in);

       int count = 0;

       System.out.println("Enter an integer between 0 and 100");

       int num = scan.nextInt();

       if (num <= 0 || num >= 100){

           System.out.println("error");

       }

       else{

           while(num <= 100){

               if (count == 20){

                   System.out.println("");

                   count = 0;

               }

               else{

                   System.out.print(num+" ");

                   count++;

                   num++;

               }

           }

       }

   }

}

I hope this helps!