#include <stdio.h>

int strlen(const char str[]) {
    int len = 0;
    while (str[len] != NULL) {
        len++;
    }
    return len;
}

int main() {
    char str[] = "This is just a string with some length of 44";

    printf("String: %s\n", str);
    printf("Length: %d\n", strlen(str));
}