main.cpp

Parking Lot Simulation： Parking lot attendants often park cars bumper-to-bumper, several cars deep.

#include <iostream>
#include <fstream>
#include <string>
#include <stack>
#include "car.h"
using namespace std;

int main(int argc, char *argv[])
{
	 
	if (argc != 2) {
        cerr << "Usage: " << argv[0] << " data-file\n";
		cerr << " you shoud use this program in the cmd line"<<endl;
        return EXIT_FAILURE;
    }
	string in_file_name=argv[1];
	string out_file_name="result.txt";
	ifstream is(in_file_name.c_str());
	ofstream os(out_file_name.c_str());
	if(!is){
		cerr<<"Can't open the file "<<in_file_name<<endl;
		return EXIT_FAILURE;
	}
	if(!os){
		cerr<<"Can't open the file "<<out_file_name<<endl;
		return EXIT_FAILURE;
	}
	stack<car*> sc,temp_sc;
	car * pcar;
	string carname,state;
	while(!is.eof() ) 
	{
		is>>carname>>state;
		if(state == "arrives")// when a car arrives
		{
			if( sc.size() < 5 )
			{
				pcar = new car(carname);
				sc.push(pcar);
				//os<<sc.top()->get_license_plate()<<" is arriving "<<endl;
			}
			else
				os<<"Sorry "<<carname<<" , The lot is full ! "<<endl;
		}
		else if(state == "departs")// when a car departs
		{
			while(!sc.empty()&&sc.top()->getlicenseplate() != carname   )//is a car in the front
			{
				temp_sc.push(sc.top());
				sc.top()->move();
				sc.pop();
			}
			if(sc.top()->getlicenseplate() == carname)
			{
				//os<<sc.top()->get_license_plate()<<" is leaving "<<endl;
				os<<sc.top()->getlicenseplate()<<" moved "<<sc.top()->getmovetime()<<" times"<<endl;
				delete sc.top();
				sc.pop();
			}
			else
				os<<"exception!"<<endl;
			while(!temp_sc.empty())
			{
				sc.push(temp_sc.top());
				temp_sc.pop();
			}

		}
	}
	os<<"\n\n These cars are still in the lot \n\n";
	while(!sc.empty())
	{
		os<<sc.top()->getlicenseplate()<<" moved "<<sc.top()->getmovetime()<<" times"<<endl;
		delete sc.top();
		sc.pop();
	}
	os.close();
	is.close();
	cout<<"The result.txt is created ,you can check it now!"<<endl;

	return EXIT_SUCCESS;
}