The COntrol of the program does not enter the for loop

Here i am pasting the code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace star1
{
    class Program
    {
        static void Main(string[] args)
        {
            Myclass obj = new Myclass();
            obj.getData();
            obj.pattern();
        }
    }
    class Myclass
    {
        int i, n, j;

        public void getData()
        {
    开发者_StackOverflow中文版        Console.WriteLine("Program for displaying pattern of *.");
            Console.Write("Enter the maximum number of *: ");
            int n = Convert.ToInt32(Console.ReadLine());
        }

        public void pattern()
        {
            Console.WriteLine("\nPattern 1 - Left Aligned:\n");
            for (i = 1; i <= n; i++)  // The Control does not enter the for loop
            {
                for (j = 1; j <= i; j++)
                    Console.Write("*");
                Console.WriteLine();
            }
        }
    }   

}

Looks like you're redeclaring n as a local variable in getData().

Try changing that line to:

 n = Convert.ToInt32(Console.ReadLine());

i.e. remove the int.

well ...

as you are not using this...

class Myclass
{
    int i, n, j;

    public void getData()
    {
        Console.WriteLine("Program for displaying pattern of *.");
        Console.Write("Enter the maximum number of *: ");
        this.n = Convert.ToInt32(Console.ReadLine());
        // OR
        //n = Convert.ToInt32(Console.ReadLine());
    }

    public void pattern()
    {
        Console.WriteLine("\nPattern 1 - Left Aligned:\n");
        for (i = 1; i <= n; i++)  // The Control does not enter the for loop
        {
            for (j = 1; j <= i; j++)
                Console.Write("*");
            Console.WriteLine();
        }
    }
}

i would encourage you to use this to distinct between scope- and instance-variables!

If you try to assign n using Console.ReadLine() in getData(), you need to remove the "int" just before. Currently, you have 2 "n" variable in different scopes. That's why your loop doesn't work.