Random Thoughts.....What Are You Thinking?

//purpose: to enable a user to add cities and their corresponding zip codes,
//along with being able to search for cities by zip code
//author: me
//date: april 26, 2012
//filename: advanced26.cpp
//input:
//output:

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

using namespace std;


//***function prototypes***
void saveCityZip();
void showCityZip();

int main()
{
	//declare variables
	int menuSelect = 0;
	string divider = "--------------------";

	do //begin loop
	{
		//show the menu, and get the user's selection
		cout << "Please select an option from the menu:" << endl;
		cout << "1) Enter city and ZIP code information." << endl;
		cout << "2) Search for a city by ZIP code." << endl;
		cout << "3) Exit program." << endl;
		cout << "Your Selection: ";
		cin >> menuSelect;
		cin.ignore(100, '\n');
		cout << divider << endl;

		//depending on the selection, call the appropriate function

		if(menuSelect == 1)
		{
			saveCityZip();
			cout << divider << endl;
		}//endif
		else
		{
			if(menuSelect == 2)
			{
				showCityZip();
				cout << divider << endl;
			}//endif
		}//endelse
	}while(menuSelect != 3); //end do...while
			

	return 0;
}//end of main function

//***function definitions***
void saveCityZip()
{
	//declare variables
	string zipCode = " ";
	string cityName = " ";

	//create file object, open file
	ofstream outCityZip;
	outCityZip.open("advanced26.txt", ios::app);

	//check if file was opened
	if(outCityZip.is_open())
	{
		//priming read of zipCode
		cout << "Enter the ZIP code(-1 to stop): ";
		getline(cin, zipCode);
		while(zipCode != "-1")
		{
			//get the city name
			cout << "Enter the City Name: ";
			getline(cin, cityName);

			//write to file
			outCityZip << zipCode << '#' << cityName << endl;

			//update read of zipCode
			cout << "Enter the ZIP code(-1 to stop): ";
			getline(cin, zipCode);
		}//endwhile

		//close the file
		outCityZip.close();
	}//endif
	else
	{
		cout << "Could not open file." << endl;
	}//endelse
}//end of saveCityZip function

void showCityZip()
{
	//declare variables
	string cityName = " ";
	string zipCode = " ";
	string fileLines = " ";
	string fileInfo = " ";
	int zipLocation = 0;
	int spaceLocation = 0;

	//create in file and open it
	ifstream inCityZip;
	inCityZip.open("advanced26.txt", ios::in);

	//check to see if file was opened
	if(inCityZip.is_open())
	{
		//search for the city by zip
		cout << "Enter the ZIP code of the city you wish to search for(-1 to stop): ";
		getline(cin, zipCode);
		while(zipCode != "-1")
		{
			//get the info from the txt file and put it in a string
			
			while(!inCityZip.eof())
			{
				getline(inCityZip, fileLines);
				fileLines += " ";
				fileInfo += fileLines;
			}//endwhile

			//find the starting and ending points of the city name, and put the city name in it's variable
			zipLocation = fileInfo.find(zipCode, 0);
			spaceLocation = fileInfo.find(" ", zipLocation+2);
			cityName = fileInfo.substr(zipLocation+2, spaceLocation);

			//display the name
			cout << "The City with the ZIP code " << zipCode << " is: " << cityName << endl;


			//update read of zip code
			cout << "Enter the ZIP code of the city you wish to search for( -1 to stop): ";
			getline(cin, zipCode);

		}//endwhile

	
		//close the file
		inCityZip.close();

	}//endif
	else
	{
		cout << "File could not be opened." << endl;
	}//endelse
}//end of showCityZip Function