#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
#define FIELD_SIZE 25
#define length(array) ( sizeof (array) / sizeof (array)[i] )

struct account
{
    char *id;
    char *password;
}
static struct account accounts[] =
{
    {
        "user", "pass"
    }
    ,
}
int is_authorized ( const char *uid, const char *pwd )
{
    int i;
    for ( i = 0;
    i <
    length ( accounts );
    i++ )
    {
        if ( stricmp ( uid, accounts[i].id ) == 0 &&   strcmp ( pwd, accounts[i].password ) ==0 )
        {
            return 1;
        }
    }
    return 0;
}
void get_password ( char *pwd, int size )
{
    int i = 0;
    int ch;
    while ( i <
    size - 1 && ( ch = getch() ) != '\r' )
    {
        if ( ch == '\b' )
        {
            if ( i != 0 )
            {
                printf ( "\b%c\b", ' ' );
                --i;
            }
        }
        else
        {
            putchar ( 'x' );
            pwd[i++] = (char)ch;
        }
    }
    pwd[i] = '\0';
}
int main ( void )
{
    char uid[FIELD_SIZE];
    char pwd[FIELD_SIZE];
    int tries = 0;
    printf ("BeefOS Logon Screen \n");
    while(tries<3){//While tries is less than 3.
        if(tries==3){
            printf("\n\n\t\t 3 Failed attempts. BYE I THINK \n\a");
            return 0; //returning 0 exits the program.. i think? you can try something else to exit the program
        }
        printf ( "\n\n\t User ID: " ); //ask user for username
        fflush ( stdout ); //wait for their input?
        if ( fgets ( uid, sizeof uid, stdin ) != NULL )//assuming the input is not empty
        {
            char *newline = strchr ( uid, '\n' );
            if ( newline != NULL )   *newline = '\0';
            printf ( "\n\t Password: " );//ask for the password
            fflush ( stdout );//wait for their input?
            get_password ( pwd, sizeof pwd );//maybe do some magic too
            if ( is_authorized ( uid, pwd ) )//if the user is authorized
            {
                printf("\n\n\n\n\n\t\t Logging in. Welcome to BeefOS 0.1a");
                break;//break out of the loop, continuing our program
            }
            else //if our user is not authorized
            {
                printf("\n\n\t\t Logging in? LolNope.\n\a");
                tries = tries + 1;//increment the tries counter
                //then do nothing so that the loop happens again and it asks the user for username again
            }
        }
    }

    int integer1;
    int integer2;
    int sum;
    printf("\n\n\n\n\n Enter a digit: \n");
    scanf("%d", &integer1 );
    printf("\n Enter a digit: \n");
    scanf("%d", &integer2 );
    sum = integer1 + integer2;
    printf("The addition of these two numbers equals %d\n", sum);
    getchar();
    return 0;
}