#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);
	
}