Question

Hello I’m having issues on my intro to Computer Science Lab Work:

CharacterLine.java: Write a program that prints a line of characters. Prompt the user to enter a character and then ask for a number. If the number is lies than 1 or greater than 80, tell the user then to exit the program. Use a while Loop to print out the character as many times as the number read in.
Example:
Please enter a character: &
Please enter a number: 15
Your line: &&&&&&&&&&&&&&&

Here is my code:

import java.util.Scanner;

public class CharacterLine

{
    public static void main(String[] args)
    {

        Scanner kb = new Scanner (System.in);
        int number;
        System.out.print("Please enter a character: ");
        String character = kb.next();
        int charact = character.length();

        System.out.print("Please enter a number: ");
        number = kb.nextInt();

        while ( number <= 80 && number >= 1 ){

            if ( number <= 80 && number >= 1 ) {
                int bills = (charact * number);
                System.out.println("Your line: " + charact++);
            }
            else {
                System.out.println("error.");
            }
            System.out.println();
            System.out.print("Please enter a number: ");
            number = kb.nextInt();
        }
        if ( number > 80 ){
            System.out.println("That number is too large");
        }
        else if ( number < 1 ){
            System.out.println("That number is too small");
        }
        else{
            System.out.println("error");
        }
    }
}

I am having issues in knowing how I can multiply the number that the user inputted and make the output the number times the one letter that the user inputted.

Thanks,
William

Answer 1

You can use loop to iterate for given number of times.. and print the character..

if ( number <= 80 && number >= 1 ) {

   char myChar = '*';

   // This while loop will run 15 times if value of number is 15..
   while(number > 0) {
        System.out.println(myChar);
        number--;   // Decrement the value of `number` by 1.
   }
}

The above while loop says:

While the value of number is greater than 0, execute the loop, and
print the statement inside it.. After printing, decrement the value of
number by 1, and check the condition once again… Continue this
process while number > 0