#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <math.h>
#include <string.h>

int main()
{
    // Variable declaration.
    char username[20];
    char password[10];
    int cap = 0, num = 0, lower = 0, special = 0, passwordCorrect = 0;

    //MOTD
    printf("Hallo! Welcome to globzin.se \n");

    //Login Session
    printf("\nThe password must contain a number, uppercase letter and a special character");
    printf("\nEnter your username: ");
    scanf(" %s", username);
    printf("\nEnter your password: ");
    scanf(" %s", password);

    // A loop that runs through all the chars one by one.
    int i;
    for (i = 0; i <= 20; i++)
    {
        if (isupper(password[i]))
        {
            cap = 1;
            printf("\nUpper! YEY %d \n", cap);
            continue;
        }
        if (isdigit(password[i]))
        {
            num = 1;
            // To print the num variable out. For the check.
            printf("\nDigit! YEY %d \n", num);
            continue;
        }
        if (islower(password[i]))
        {
            lower = 1;
            // To print the lower variable out. For the check.
            printf("\nLower! YEY %d \n", lower);
            continue;
        }
        if (ispunct(password[i]))
        {
            special = 1;
            // To print the special variable out. For the check.
            printf("\nSpecial! YEY %d \n", special);
            continue;
        }
        else {
            break;
        }
    }
    // The score from the password checks.
    passwordCorrect = cap + num + lower + special;
    if (passwordCorrect >= 4)
    {
        system("cls");
        printf("You made it! WHOOOOHO, cap: %d num: %d lower: %d special: %d \n\n", cap, num, lower, special);
        printf("Welcome, %s \n", username);
    }
    else {
        printf("You have to type in a uppercase, a number, lowercase and a special character. \n");
    }

    return 0;
}