using System;

public class Program

{

    public static void Main()

    {

        int i, j; 

​

        for (i = 1; i <= n; i++) 

​

        { 

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            for (j = 1; j <= m; j++) 

​

            { 

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                if (i == 1 || i == n ||  

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                    j == 1 || j == m)          

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                    Console.Write("*");          

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                else 

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                    Console.Write(" ");          

​

            } 

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                   Console.WriteLine(); 

​

        } 

​

​

    } 

​

​

    // Driver program for above function 

​

    public static void () 

​

    { 

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        int rows = 6, columns = 20; 

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        print_rectangle(rows, columns); 

​

    } 

} 

    }