Cross Platform - Clear and Sleep

#include

#ifdef __unix__
# include
#define clear() system("clear");

#elif defined _WIN32
# include
#define sleep(x) Sleep(1000 * x)
#define clear() system("cls");


#endif

int main(){

    char name[20];

    clear();
    printf("Hello World\n");
    sleep(2);

    clear();
    printf("Please Enter You Name: ");
    fgets(name,sizeof(name),stdin);
    sleep(2);

    clear();
    printf("Hello %s", name);
    sleep(2);

}