Can't figure out what to do with this code

[bedudkowski]

I have to write this card game, SCAT or 51, using pointers and structs. I have to read in the deck from a file and read in the players from a separate file. I cant figure out how to get it work properly. Any help would be great.

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cstring>
using namespace std;

struct card{
	char rank[5];
	char suit[7];
	int cvalue;
	char location[4];
	};
struct player{
	int total;
	char name[100];
	};

void strcopy(char* &to, char* from);
void card_copy(card* &dest, card *source);
void choice_one();
void choice_two();
void choice_three();
void get_menu();
int main()
{
	int choice;
	do{
		get_menu();//Displays the menu
		cout << "Enter you choice: ";
		cin >> choice;
		cout << endl << endl;
	}while (choice == 1 && choice == 2 && choice == 3 && choice == 4);
	switch (choice)
		{
			case 1: 
				{
					choice_one();
					break;
				}
			case 2: 
				{
					choice_two();
					break;
				}
			case 3: 
				{
					choice_three();
					break;		
				}
			case 4: 
				{
					cout << "Goodbye!\n\n";
					break;
				}
				
		}

	return 0;
}

void get_menu(){
	cout << endl << endl;
	cout << "Choose an option\n"
	     << "-------------------\n"
	     << "1. Print unshuffled deck to screen\n"
	     << "2. Print shuffled deck to the screen\n"
	     << "3. Print players\n"
	     << "4. Quit\n\n";
}

void choice_one()
{
	fstream fin;
	fin.open("unshuffled");
	card unshuff[52];
	card* uptr1;
	uptr1 = unshuff;
	card* uptr2;
	uptr2 = unshuff;
	for (int i = 0; i < 51; i++)
		{
			fin >> (*uptr1).rank;
			fin >> (*uptr2).suit;
			card_copy(uptr1, uptr2);
			cout << uptr1 << endl;
			*uptr1++;
		}				
	fin.close();
	cout << endl << endl;
}

void choice_two()
{
	char filename[100];
	cout << "Enter the filename you would like to read from: ";
	cin >> filename;
	fstream fin;
	fin.open(filename);
	card unshuff[52];
	card* cptr1;
	card* cptr2;
	cptr1 = unshuff;
	cptr2 = unshuff;
	for (int i = 0; i < 51; i++)
		{
			fin >> (*cptr1).rank;
			fin >> (*cptr2).suit;
			cout << cptr1;
			cptr1++;
			cptr2++;
		}						
	card *p1, *p2;
	card *temp;
	card *t = temp;
	int num1 = rand() % 52;
	int num2 = rand() % 52;
	srand (time(NULL));
	for (int i = 0; i < 200; i++)
		{
			p1 = unshuff;
			p2 = unshuff;
			for (int i = 0; i < num1; i++)
				{
					p1++;
				}
			for (int i = 0; i < num1; i++)
				{
					p2++;
				}

			card_copy(t, p1);
			card_copy(p1, p2);
			card_copy(p2, t);
		}
	fin.close();
	cout << endl << endl;
}

void choice_three()
{
	char filename[100];
	cout << "Enter the filename you would like to read from: ";
	cin >> filename;
	fstream fin;
	fin.open(filename);
	player playa1[5];
	player playa2[9];
	player *nptr1;
	nptr1 = playa1;
	player *nptr2;
	nptr2 = playa2;
	cout << "The players are: \n\n";
	for (int i = 0; i < 4; i++)
		{
			fin >> (*nptr1).name;
			fin >> (*nptr2).name;
			cout << (*nptr1).name << " " << (*nptr2).name << endl;
		}			
	fin.close();
	cout << endl << endl;
}

void strcopy(char* &to, char* from)
	{
		char *reset = to;
		while (*from != '\0')
			{
				*to = *from;
				to++;
				from++;
			}
		*to = '\0';
		to = reset;
	}

void card_copy(card* &dest, card *source)
	{
		strcpy ((*dest).suit, (*source).suit);
		strcpy ((*dest).rank, (*source).rank);
		(*dest).cvalue = (*source).cvalue;
	}

[48T7M4Gy]

What exactly is the first thing that's not working properly?