ROBLOX multiple clients

rbxmulti.c

#include <windows.h>
#include <stdio.h>

int main(int argc, char *argv[])
{
    HANDLE mutex = CreateMutexA(NULL, TRUE, "ROBLOX_singletonMutex");

    puts("Enter 'q' to quit");
    while (getchar() != 'q');

    ReleaseMutex(mutex);
    CloseHandle(mutex);
}