[help]stacks

[aquariusmirky]

i'm working on a problem with stacks, that's supposed to keep track of incoming and outgoing cars of a garage.
the program takes in an input file, and is supposed to read in every arriving and departing car and prints out arriving and departing time and parking cost.
my code runs correctly up until the first departing car, it prints up then and prints cars in the garage but then the code just got stuck there and won't run any further, can someone take a look and give me a hint what made it stuck? thanks!

#include <iostream>
#include <fstream>
#include <cassert>
#include <string>

using namespace std;
struct car
{
 char code; //in 'A' or 'D' for arriving or departing     
 string license;
 int hour;
 int min;       
};

class stack
{
 public:      
   public: 
   static const int CAPACITY = 6;	
   typedef car STACK_TYPE;
   stack();	// constructor
   void push(STACK_TYPE);// add element to the stack
   STACK_TYPE pop();// return top element
   bool	is_empty();	
   bool is_full();
 private:
   int top;
   STACK_TYPE items[CAPACITY];  
};
stack garage;
stack street;

stack::stack()
{
 top=-1;//nothing on stack initially
}

void stack::push(STACK_TYPE value)
{
 assert(top !=CAPACITY-1);
 top++;
 items[top]=value;
}

stack::STACK_TYPE stack::pop()
{
  STACK_TYPE value;
  assert(top>=0);
  value= items[top];	
  top--;
  return(value);                
}

bool stack::is_empty()
{
  if (top== -1) return true;
  else return false;
}	

bool stack::is_full()
{
  if (top==CAPACITY-1) return true;
  else return false;
}

void print_garage()
{
     car temp;
     cout<<"Cars parked in the garage: "<<endl;
     while (!garage.is_empty())
     {
     temp = garage.pop();     
     street.push(temp);
     }
     while(!street.is_empty())
     {
     temp = street.pop();
     cout<<temp.license<<endl;
     garage.push(temp);
     }
}

void time_parked(int &a, int &b, int &c, int &d)//prints time parked & charges
{
 int hour_diff;
 int min_diff;
 double charges;
 if (d<b)//if departing minutes is less than arriving minutes
 {
   hour_diff = c-a-1;
   min_diff = d-b+60;
 }
 else
 {
 hour_diff = c-a;
 min_diff = d-b;
 }
 charges = 7.5*2*hour_diff;
 if (min_diff>30)
 {
 charges = charges + 7.5*2;
 }
 else if (min_diff>0)
 {
 charges = charges + 7.5;     
 }
 cout<<"Time Parked: "<<hour_diff<<":";
 if (min_diff>=10) cout<<min_diff<<endl;
 else cout<<"0"<<min_diff<<endl;
 cout<<"Total Charges: $"<<charges<<endl;
}


int main ()
{
  car cars[100];
  car temp;
  int a_hour;
  int a_min;
  int x=0;
  
  fstream textfile;
  textfile.open("data4.txt");
  textfile>>cars[x].code;
  while(!textfile.eof())
  {                                                
    textfile>> cars[x].license;
           
    cout<<"************************************************"<<endl;
    if (cars[x].code == 'A')
    {                   
      textfile>> cars[x].hour;
      textfile>> cars[x].min;               
      if(garage.is_full())
      {
        cout<<"Garage is full"<<endl;
        cout<<"license:"<<cars[x].license<<endl;
      }                
      else
      {
        cout<<"The car has been parked in the garage. "<<endl;    
        garage.push(cars[x]);  
        cout<<"license:"<<cars[x].license<<endl;
        cout<<"time of arrival: ";
        if (cars[x].min<10){
          cout<<cars[x].hour<<":0"<<cars[x].min<<endl;}
        else{
          cout<<cars[x].hour<<":"<<cars[x].min<<endl;}
      }  
    }                     
    else 
    {
      textfile>> cars[x].hour;
      textfile>> cars[x].min; 
      
      while(!garage.is_empty())
      {
        temp = garage.pop();
        street.push(temp);
        while (temp.license!=cars[x].license)
        {//backing cars from garage to street until finding the matching license car
          if(!garage.is_empty())
          {
           temp = garage.pop();
           street.push(temp);
          }           
        }
        
        if (temp.license!=cars[x].license)
        {
          cout<<"Car not found"<<endl;
          cout<<"License: "<<cars[x].license;
        } 
        else
        {
          
          cout<<"license:"<<cars[x].license<<endl;
          cout<<"time of departure: ";
          if (cars[x].min<10)
            cout<<cars[x].hour<<":0"<<cars[x].min<<endl;
          else
            cout<<cars[x].hour<<":"<<cars[x].min<<endl;
          time_parked(temp.hour, temp.min, cars[x].hour, cars[x].min);
          street.pop();
          while(!street.is_empty())
          {
            temp=street.pop();
            garage.push(temp);
          }
          cout<<endl;
          print_garage(); 
        }   
      }
    } 
    cout<<"************************************************"<<endl;
    x++;
    textfile>> cars[x].code;
  }
  
  system("pause");
}