Thread: abnormal program termination

Any suggestions as to what would cause my program to run properly until it hops out of while loops to print out a closing statement??? I listed the read in file also?? Thanks a bunch!!

Bashemin.in reads:

aVAX785
aPDP11
aIBM360
aMTHCSC
dPDP11
p
aMAC512
dVAX785
aPI314
aCSB-1
dCSB-1
dIBM360
p
aPDP11
a257ADT
dMAC512

Code:

#include <iostream>
#include <string>
#include <fstream>
#include <stack>
#include<iomanip>

using namespace std;

int main()
{
	stack<string> parkinglot;
	stack<string> alley;
	stack<string> hold;
	/*Stack parkinglot; //Parking lot
	Stack alley; //Alley
	Stack hold; //Place to store while running print*/


	string plate; //License plate info
    char c;		//Used for Printing pause to screen
	char firstchar;  //String in the in file
	string s;		//Hlds each car data
	int f = 0;// Counter to determine if lot is full
	int i = 0;//Keeps track of moved cars
	string filename;//Bashemin
	
	cout << "            Welcome to the Bashemin Parking Lot." << endl << endl;
	cout << "\nEnter filename to process (bashemin.in used for sample data): ";	
	cin >> filename;

	ifstream cinf(filename.c_str()); //get data

	if (!cinf){          //error message
		cout << "Cannot open file " << filename << endl;
		exit(1);
	}


	while (getline(cinf,s,'\n')){
		firstchar = s[0];
		plate = s.substr(1);
	
		
	
        //if car arrives and lot is full do:
		if (firstchar== 'a' && f==5){
			cout << "Lot is full you may not park here!!"<< endl;
		}
		//if car arrives and lot isn't full do:
		if(firstchar == 'a' && f!= 5) {     
			parkinglot.push(plate);  
			cout<< "Car "<< plate <<" arrived and parked."<<endl;  
			f ++;

		}

		//if car is departing do:
		if (firstchar == 'd'){	
			int i=0;			
				while (!parkinglot.empty() && parkinglot.top() != plate ){					
					alley.push(parkinglot.top());
					parkinglot.pop();
					i++;
					
					//car not found in lot do
					if(parkinglot.empty() && f==5){
					cout << "Car " << plate << " not in lot to depart." <<endl;				
					}				
				
				}

		
				//car found, decrease lot count				
				if (!parkinglot.empty() && parkinglot.top() == plate){
					f--;
					cout << "Car " << plate << " departing;  ";
					cout << i << " cars moved to get out." << endl;
					parkinglot.pop();
					i=0;					
				}	      
			}		
		
			while (!alley.empty()){
				parkinglot.push(alley.top());
				alley.pop();
			
			}
	
	//Print cars in parking lot:
		if (firstchar == 'p'){
		cout <<"Cars parked in Bashemin Lot are:\n";
			while (!parkinglot.empty()){
				cout << parkinglot.top() << endl;
				alley.push(parkinglot.top());
				parkinglot.pop();
			}

			while(!alley.empty()){
				parkinglot.push(alley.top());
				alley.pop();
			}
		
		}
	
	
	}
	
	

	//tow cars left in lot after data flow is done
	cout << "Bashemin lot is closing and the following cars will be towed." << endl;

	while (!parkinglot.empty()){		
		cout << parkinglot.top() << endl;
		alley.push(parkinglot.top());
		parkinglot.pop();
	}

	return 0;
	}