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C Program to Illustrate how User Authentication is Done

C Program to Illustrate how User Authentication is Done

This C program asks for the user name & password and displays the same to illustrate user authentication.

- Take the user name & password as input.
- Print the each character of password as * while receiving it.
- Now print the original password and exit.

    #include <stdio.h>

    void main()

    {

    	char password[20], username[20], ch;

    	int j;

    	printf("Enter User name: ");

    	gets(username);

    	printf("Enter the password < any 8 characters>: ");

    	for (j = 0; j < 8; j++)

    	{

                ch = getchar();

                password[j] = ch;

                ch = '*' ;

                printf("%c", ch);

    	}

            password[j] = '\0';

    	/*  Original password can be printed, if needed */

    	printf("\n Your password is :");

    	for (j = 0; j < 8; j++)

    	{

                printf("%c", password[j]);

    	}

    }

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