C# Program to Illustrate how User Authentication is Done

This C# Program Illustrates how User Authentication is Done. Here The program accepts the username and password. It checks whether the password is correct with respect to the username.

Here is source code of the C# Program to Illustrate how User Authentication is Done. The C# program is successfully compiled and executed with Microsoft Visual Studio. The program output is also shown below.

```
/*
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 * C# Program to Illustrate how User Authentication is Done

```
 */
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```
using System;
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```
class program
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```
{
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    public static void Main()
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```
    {
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        char[] password = new char[10];
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        char[] username = new char[10];
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        char ch;
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        int i;
```
```
 
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        Console.WriteLine("Enter User name < 3 characters > : ");

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        for (int x = 0; x < 8; x++)
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        {
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            username[x] = Convert.ToChar(Console.Read());

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        }
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        Console.WriteLine("Enter the password < any 8 characters>: ");

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        for (i = 0; i < 8; i++)
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        {
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            ch = Convert.ToChar(Console.Read());

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            password[i] = ch;
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            ch = '*';
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            Console.WriteLine("{0}", ch);

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        }
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        password[i] = '\0';
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        Console.WriteLine("\n Your Password is :");

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        for (i = 0; i < 8; i++)
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        {
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            Console.Write("{0}", password[i]);

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        }
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        Console.ReadLine();
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        Console.ReadLine();
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    }
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}
```

Here is the output of the C# Program:

Enter User name < 3 characters > :
s
r
i
Enter the password < any 8 characters>:
*
s
*
*
*
r
*
*
*
i
*
 Your Password is :
s
r
i

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