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

using std::string;
using std::cout;
using std::cin;
using std::endl;

struct FileHeader
{
	char headerField[2];
	unsigned int fileSize;

	void display();
};

void FileHeader::display()
{
	cout << "headerField: " << headerField[0] << headerField[1] << endl;
	cout << "fileSize: " << fileSize << endl;
}

struct ImageHeader
{
	void display();
};

void ImageHeader::display()
{
}


struct Image
{
	FileHeader fileHeader;
	ImageHeader imageHeader;
	// an array of pixels

	Image( char fileName[]);
	void displayHeaders();
};

Image::Image(char fileName[])
{
	std::ifstream fin(fileName, std::ios::binary);
	//first argument must be an address (char*)
	//file pointers - (put)p pointer, (get)g pointer
	fin.read(fileHeader.headerField,2);
	//(char*) type cast 
	fin.read((char*)&fileHeader.fileSize,4);
	//fin.seekg(4); //skip the next four bytes
	//fin.seekg(4,std::ios::cur); //skip the next four bytes from current position
	//fin.seekg(4,std::ios::beg); //skip the next four bytes from begining of file
	//fin.seekg(-4,std::ios::end); //skip the next four bytes from begining of file
	fin.close();
}

void Image::displayHeaders()
{
	fileHeader.display();
	imageHeader.display();
}

void main()
{
	Image image("untitled.bmp");
	image.displayHeaders();
}