Notes Oct 1 2014

Input and Output

istream 
	is the "parent" of all input streams
	
ostream
	is the "parent" of all the output streams
	
stream
	c++ views data as streaming past or through your program.
	
we process our streams sequentially

We can "read" data from our stream using extraction >>

extraction will read as much data from the stream as it can until
1. The stream is exhausted
2. It encounters data that doesn't match the data type it's trying to read
3. It encounters whitespace, tab \t, space , or newline \n

extraction skips whitespace for you.

input files

ifstream - the input stream for reading Input Files

#include <fstream>
using std::ifstream;

To open a file, we need to

1. declare our variable
2. open the file