[C++] Need help with random numbers

#include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std;

int card, currentcard, all, house, finish;
char hit;

int getcard()		//getcard function
{
	srand(time(NULL));
	currentcard = rand() % 12 + 1;	//getting random numbers
	all = all + currentcard;		
	house = rand() % 4 + 18;
	return 0;

}
int main()
{
	all = 0;
	all = getcard();
	cout << "Welcome to 21!\n\n";
	cout << "Your first card is " << all << "\n";
	do
	{
		cout << "Would you like to (H)it or (S)tand?\n";
		cin >> hit;
		if (hit == 'h')
			{
				getcard();
				cout << "Your card was " << currentcard << "\n";
				cout << "Your sum is " << all << "\n";
				if (all >= 21)
				{
					goto end;
				}
			}
	}while (hit == 'h');

end:
{
	cout << "The house had " << house << "\n";
	if (house == all)
		{
			cout << "House wins ties...sorry!\n";
		}
	else if (all > 21)
	{
		cout << "You busted! House wins...\n";
	}
	else if (house >= all)
		{
			cout << "You lose!\n";
		} 
	else
		{
			cout << "You win!\n";
		}
	return 0;
}

	return 0;
}