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

using namespace std;

//fixed length vs. variable length records

struct OfficerLocation
{
	double latitude;
	double longitude;
	int speed;
	char name[100];
};


void getLocations(OfficerLocation officerLocations[], int n)
{
	for(int i = 0; i < n; i++)
	{
		officerLocations[i].speed = rand() % 100; 
		officerLocations[i].latitude = rand() % 90; 
		officerLocations[i].longitude = -1 * (rand() % 90); 
		itoa(rand() % 100000,officerLocations[i].name,2); 
	}
}






void displayLocations(OfficerLocation officerLocations[], int n)
{
	for(int i = 0; i < n; i++)
	{
		cout << officerLocations[i].speed << endl; 
		cout <<  officerLocations[i].latitude << "," << officerLocations[i].longitude << endl; 
		cout << officerLocations[i].name << endl << endl;
	}
}

void writeLocationsToFile(OfficerLocation officerLocations[], int n)
{
	ofstream fout("locations.dat", ios::binary);

	fout.write((char*)officerLocations,sizeof(OfficerLocation)*n);
	
	//for(int i = 0; i < n; i++)
	//{
	//	fout.write((char*)&(officerLocations[i]),sizeof(OfficerLocation));
	//	//fout.write((char*)&(officerLocations[i].latitude),8);
	//	//fout.write((char*)&(officerLocations[i].longitude),8);
	//	//fout.write((char*)&(officerLocations[i].speed),4);
	//	//fout.write((char*)officerLocations[i].name,100);

	//	//fout << officerLocations[i].speed << endl; 
	//	//fout <<  officerLocations[i].latitude << "," << officerLocations[i].longitude << endl; 
	//	//fout << officerLocations[i].name << endl << endl;
	//}

	fout.close();
}

void main()
{
	cout << sizeof(OfficerLocation) << endl;

	OfficerLocation officerLocations[100];

	getLocations(officerLocations,100);
	displayLocations(officerLocations,100);
	writeLocationsToFile(officerLocations,100);


}