#include<iostream>
#include<fstream>
#include<cstdlib>
#include<string>
using namespace std;
//For storing hour and minute as a Time variable
struct Time
{
	int hour,min;
};
//Structure for flight information.
struct Flight
{
	string flNo;
	string	origin, dest;
	int passCount;
	Time etd,eta;
};
//make sure the input files are in the same folder as your program
int main()
{

	ifstream in1; //input stream. Use like cin
	ofstream out1;//output stream, use like cout

	in1.open("flights.txt");//Open input file flights.txt
	if(!in1) //abort program if file could not be opened
	{
		cout<<"Error opening input file"<<endl;
		exit(0);
	}
	out1.open("data.txt");//open output file. If file exists, contents will be overwritten
	if(!out1) //abort if file connot be opened
	{
		cout<<"Error opening output file"<<endl;
		exit(0);
	}
	//Array of flights
	Flight *ptr = new Flight[6];

	//First file contains data about flight number, origin and destination. 
	//We don't know how many we have, so we will keep a count and go until the file ends.
	//You don't have to do this on the homework, since the first line of the first file
	//is the number of records.
	//eof is a special function, which retuns true if we have reached the end of the file
	int i=0,count = 0;
	while(!in.eof())
	{
		getline(in1,ptr[i].flNo,' ');
		getline(in1,ptr[i].origin, ' ');
		getline(in1,ptr[i].dest);
		count++;
		i++;
	}
	in1.close(); //file is closed, but stream is still available.
	//We can use the same stream for a different file.
	in1.open("times.txt"); //contains file number, ETD and ETA
	if(!in1)
	{
		cout<<"Error opening second input file"<<endl;
		exit(0);
	}
	//The records in the second file might not be in the same order as the first file
	//You don't have to check this for the homework, the records will be in the same order
	for(int i=0;i<count;i++)
	{
		string str;
		in1>>str; //read the flight number
		for(int j=0;j<count;j++) //look through the array and see if flight number matches
		{
			if(ptr[j].flNo == str)
			{
				in1>>ptr[j].etd.hour>>ptr[j].etd.min>>ptr[j].eta.hour>>ptr[j].eta.min;
			}
		}
	}

	//print all the records in the output file
	//You won't see anything printed on the screen, since all output goes to file
	//Look in file called "data.txt" for output
	out1<<"FLNO\tORG\tDES\tETD\t\tETA\t\n";
	for(int i=0;i<count;i++)
	{
		out1<<ptr[i].flNo<<"\t"<<ptr[i].origin<<"\t"<<ptr[i].dest<<"\t"
			<<ptr[i].etd.hour<<":\t"<<ptr[i].etd.min<<"\t"<<ptr[i].eta.hour<<":\t"<<ptr[i].eta.min<<endl;
	}
	//always better to close all open files before we exit
	in1.close();
	out1.close();
	return 0;
}