Thread: If statement not working

The if statement inside the while loop is not working.

Code:

#include <stdio.h>
#include <string.h>

void startup_message();

int main ()
{
    startup_message();
    char username[10];
    char correct_username[10];
    char second_part_of_correct_username[5];
    char firstname[10];
    char lastname[20];
    int attempts;
    long long int cin;
    long long int correct_password;
    long long int password;

    printf("Enter your first name:\n");
    scanf("%s",firstname);

    strncpy(correct_username,firstname,2);
    correct_username[2]='\0';

    printf("Enter your last name:\n");
    scanf("%s",lastname);

    strncpy(second_part_of_correct_username,lastname,3);
    second_part_of_correct_username[3]='\0';
    strncat(correct_username,second_part_of_correct_username,5);
    
    printf("Enter your Customer Identification Number(CIN):\n");
    scanf("%llu",&cin);
    correct_password=(cin%10)+1;
    printf("%d",correct_password);
    printf("Enter username:\n");
    scanf("%s",&username);

    printf("Enter password:\n");
    scanf("%llu",&password);
    
    if ((password==correct_password) && strcmp(username,correct_username)==0)
        {
            printf("Login successful!\n");
        }
    
    while ((password!=correct_password) || strcmp(username,correct_username)!=0)
        {
            printf("Login unsucessful! Please try again.\n");
            
            
            printf("Enter username:\n");
            scanf("%s",&username);

            printf("Enter password:\n");
            scanf("%llu",&password);
            ++attempts;
            if (attempts==5)
                printf("Too many tries.\n");
            if (attempts==5)
                break;
        }
    
    return 0;
}

void startup_message()
{
    printf("Welcome to the newly introduced smsTransfer (a joint project of STARTRIGHT AND GLOBE TELECOM)!\n\n");
    printf("REMINDER: Both the transferers and the transferees must have active accounts with both companies to take part in this service.\n\n");
}