I need to know WHY this works?

[chapanoodle]

So this simple solution reads the file "level1.lbh" and prints out the frst two lines of text in that file. My questiuon is WHY? I am totally new to programming

#include <iostream>
#include <fstream>
#include <stdlib.h>

std::fstream inFile;

int Height, Width;

int main()
{
	inFile.open("level1.lbf", std::fstream::in);

	inFile >> Height; 
	inFile >> Width;
	
	inFile.close();

	std::cout << "Reading level size from level1.lbf..." << std::endl;
	std::cout << "Height " << Height << std::endl;
	std::cout << "Width " << Width << std::endl;

	system("PAUSE");

	return 0;

}

[keskiverto]

Now you have to read a bit.

On line 5 it says that "inFile is a std::fstream
http://www.cplusplus.com/reference/fstream/fstream/
On line 11 there is some open( ... )
http://www.cplusplus.com/reference/fstream/fstream/open/
Lines 13 and 14 have a >>
http://www.cplusplus.com/reference/istream/istream/operator%3E%3E/

Or perhaps it would be better for you to start with:
http://www.cplusplus.com/doc/tutorial/
http://www.cplusplus.com/doc/tutorial/basic_io/
http://www.cplusplus.com/doc/tutorial/files/


The line 22 is not so good. See:
http://www.cplusplus.com/forum/beginner/1988/
http://www.cplusplus.com/articles/j3wTURfi/


The program does not exactly read "two lines of text". It reads two integers. It is a mere (happy?) coincidence if the file "level1.lbf" happens to contain one integer in each of the two first lines and no other characters (save whitespace).