Assuming this is real, how the fuck do you fuck up so badly?

What the hell is that code even meant to do?

Yes, I did type it out manually (not really, I just copy pasted it and changed the according values)

Just stupid

Its already written in C1

This is 100% true. I never plan on actually using this. It might be useful for working on microcontrollers like an ESP32, but apart from that the trade of for more computational power is not worth the memory savings.

Hmmmmmmm, that sounds like another fun idea. Trying to make storing a single char as inefficient as possible.

I do sometimes work with microcontrollers, but so far I have not encountered a condition where these minimal savings could ever be useful.

I know. This whole thing was never meant to be very useful, and more like a proof of concept

did not want to always scroll past that behemoth of a switch case xD

I am constantly on how I can allow Uppercase, without significantly reducing the posiible amounts of chars

Idk, I just had this funny idea, and thought I could do this as a cool and quick proof of example

Ah, thats cool. Did not knew you could that… Thanks.

Did not knew that this existed, but yeah its kinda like that. Except that I only allow 5 characters.

Damn, that are setups where you have to get creative.

I did not knew this existed, so thanks for the tip.

Yeah, but I kinda dont want to learn/use C++

I found the mistake. Since the country code char array only has a size of 2 it overwrites the \0 char causing the memory to leak.

Thanks, I did not knew this. I always appreciate constructive criticism. I am quite new to C so theres a shit ton of stuff I have never done or dont even know about.

This is the code I used:

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

#define MAX_ACCOUNTS 255

typedef struct
{
    unsigned int id;
    char account_creation_date [10];
    char first_name [255];
    char last_name [255];
    char country_code [2];
    unsigned int iban;
    char password [255];
    double balance;
} account;

account accounts_db[MAX_ACCOUNTS];
unsigned int accounts_created = 0;

account get_account_id (unsigned int id)
{
    int i = 0;
    while(i < MAX_ACCOUNTS)
    {
        if(accounts_db[i].id == id)
        {
            return accounts_db[i];
        }
        i++;
    }
    account account;
    account.id = -1;
    return account;
}

void create_account(char first_name [255], char last_name [255], char password [255], char country_code [2])
{
    account new_account;
    new_account.id = accounts_created;
    strcpy(new_account.first_name, first_name);
    strcpy(new_account.last_name, last_name);
    strcpy(new_account.password, password);
    strcpy(new_account.country_code, country_code);
    strcpy(new_account.account_creation_date, "");
    new_account.balance = 0.0;
    new_account.iban = 0;
    accounts_db[accounts_created] = new_account;
    accounts_created++;
}

int main()
{
    char first_name [255]  = "Max";
    char last_name [255] = "Mustermann";
    char country_code [2] = "DE";
    char password [255]= "password";
    create_account(first_name, last_name, password,country_code);
    account account = get_account_id(0);
    printf("Name: %s %s \n", account.first_name, account.last_name);
    printf("Account creation date: %s\n", account.account_creation_date);
    printf("IBAN: %s %d", account.country_code, account.iban);
}```

When you run it you can see, that behind the country code of the IBAN you get the first two letters of the surename