Fucking epic number machine

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


#define MAX 15

bool Transfer(int, char *, int);

int main(int argc, char **argv) {
    char string[MAX];
    memset(string, '\0', sizeof(char) * MAX);
    Transfer(atoi(argv[1]), string, atoi(argv[2]));
    int counter = strlen(string);
    char swapstring[counter];
    for (int i = 0, j = counter - 1; i < counter; j--, i++) {
        swapstring[i] = string[j];
    }
    printf("%s", swapstring);

}

bool Transfer(int number, char *string, int sys) {
    int rest;
    int counter = 0;
    while(1) {
        if ((rest = number % sys) >= 10) {
            string[counter] = rest + 55;
        } else {
            string[counter] = rest + 48;
        }
        if ((number = number / sys) == 0) {
            return true;
        }
        if ((number != 0 && counter >= MAX - 1)) {
            return false;
        }
        counter++;
    }
}