HW help?

[ragforce]

So basically I need to write a program for blackjack the card game. my plan is to have 1 function get the number of cards, 2nd function add together the next line of values and then print the value or state that it's over 21. Currently my problem is that it doesn't print anything for my result. Please go easy on me, I know I suck at C++
j = jack
q = queen
k = king
a = ace
t = 10
My sample input that I must use is:
2
j j
3
q k j
4
2 5 t 2
5
5 5 5 2 2
4
5 3 k q
3
a a a
2
a a
4
a a 8 2
3
a k q
2
a t
2
a q
3
f t 3
5
g 3 5 2 3
2
l k
3
j k q
-99 // that "-99" is suppose to be for ending the program.

#include<fstream>
#include<cmath>
#define in_file "data.txt"
#define out_file "result.txt"
using namespace std;
char choice;
int cards, value = 0, total = 0;
void numberofcards(int&);
void card_total(char, int, int, int&);

int main ()
{
	ifstream ins;
    ofstream outs;
    ins.open(in_file);
    outs.open(out_file);
	while (ins != "-99")
	{
		numberofcards(cards);
		card_total(choice, value, cards, total);
		if (total <= 21) 
		{
			outs << total << endl;
		}
		else if (total > 21)
		{
			outs << "Busted" << endl;
		}
	}
	ins.close();
	outs.close();
}

void numberofcards(int& cards)
{
	ifstream ins;
    ofstream outs;
    ins.open(in_file);
    outs.open(out_file);
	ins >> cards;
	switch (cards)
	{
	case '2':
		cards = 2;
		break;
	case '3':
		cards = 3;
		break;
	case '4':
		cards = 4;
		break;
	case '5':
		cards = 5;
		break;
	}
}

void card_total(char choice, int value, int cards, int& total)
{
	ifstream ins;
    ofstream outs;
    ins.open(in_file);
    outs.open(out_file);
	while (ins >> cards)
	{
		switch (choice)
		{
		case '2':
			value = 2;
			total = total + value;
			break;
		case '3':
			value = 3;
			total = total + value;
			break;
		case '4':
			value = 4;
			total = total + value;
			break;
		case '5':
			value = 5;
			total = total + value;
			break;
		case '6':
			value = 6;
			total = total + value;
			break;
		case '7':
			value = 7;
			total = total + value;
			break;
		case '8':
			value = 8;
			total = total + value;
			break;
		case '9':
			value = 9;
			total = total + value;
			break;
		case 't':
			value = 10;
			total = total + value;
			break;
		case 'j':
			value = 10;
			total = total + value;
			break;
		case 'q':
			value = 10;
			total = total + value;
			break;
		case 'k':
			value = 10;
			total = total + value;
			break;
		case 'a':
			value = 11;
			total = total + value;
			if (total > 21)
			{
				value = 1;
                        }
			break;
		}
	}
}