#include <stdio.h>
#include <stdlib.h>
#include <time.h>

void clear()
{
	#if defined(__linux__) || defined(__unix__) || defined(__APPLE__)
        system("clear");
    #endif

    #if defined(_WIN32) || defined(_WIN64)
        system("cls");
    #endif
}

void delay(unsigned int milliseconds)
{
    clock_t start = clock();
    while((clock() - start)*1000.0f/CLOCKS_PER_SEC < milliseconds);
}