#include <stdio.h>

int strlen(const char *s) {
    int len = 0;
    while (*s != '\0') {
        len++;
        s++;
    }
    return len;
}

void strcpy(char *dest, const char *src) {
    while (*src != '\0') {
        *dest = *src;
        dest++;
        src++;
    }
    *dest = '\0';
}

void bubble_sort(char *str, int len) {
    for (int i = 0; i < len - 1; i++) {
        for (int j = 0; j < len - i - 1; j++) {
            if (str[j] > str[j + 1]) {
                char temp = str[j];
                str[j] = str[j + 1];
                str[j + 1] = temp;
            }
        }
    }
}

int main() {
    char word[] = "Fabian";
    int length = strlen(word);

    bubble_sort(word, length);

    return 0;
}