//Programmer - Matthew Kulas

//Project - U6 A4 - Times Table Generator

//Date - Start: April 25, 2023 End: April 26

// Description - Create a program that allows the user to enter in the size of the table to be generated and then display the given formatted table.

​

​

using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Welcome to the times table generator!"); //heading

        Console.WriteLine(new string(' ',100)); // space

        sError: //if theres an error, goes back to here

        Console.WriteLine("Please enter in the size of the table (1-139):"); //ask user to enter in size of the table

        int size;

        string input = Console.ReadLine();

        // Error Check

        try

        {

        size = Convert.ToInt32(input);  

        }

        catch (Exception e)

        {

        Console.WriteLine("Please enter in a valid value!"); //displays this message

        goto sError; //goes to sError

        }   

        if ((size<0) || size>139) //if user inputs negative number, or number greater than 139 (more than 139 crashes code), go back to sError

        { 

        Console.WriteLine("Please enter in a number from 0-139"); //displays this message

        goto sError; //goes to sError

        }

        for (int c = 0; c<=size; c++) //count by 1 and repeat until the size of the table (stoping condition)

        { 

        Console.Write("{0,5}",c); // //display the size of the table (numbers) on the top

        } //end of loop

        Console.Write("\n"); //start new line

        Console.WriteLine(new string('_',5*(size+1))); //line

        for (int n = 1; n<=size; n++) //count by 1 and repeat until the size of the table (stoping condition)

        { 

        Console.Write("\n"); //start new line

        Console.Write("{0,5}",n+" |"); //display the size of the table (numbers) on the side

            for (int m = 1; m<=size; m++) //repeat for the amount of the size of the table

            {           

            Console.Write("{0,5}",n*m); // multiply the table values and diplay them in the center of the table

            } 

        } //end of loop

    }

}

​