## Overview

Text filter that demonstrates class pipeline. Example program reads a file containing decimal integers in text format, and changes each to its square.

## Files

square.cpp
  Source code for example.
gen_input.cpp
  Source code for sample input generation.
Makefile
  Makefile for building example.

## Directories

msvs
  Contains Microsoft* Visual Studio* 2005 workspace for building and running the example.
xcode
  Contains Xcode* IDE workspace for building and running the example.

## To Build

General build directions can be found here.

Two additional targets for this example:

`make gen_input`
  Create an input generator program that prints out a sequence of integers.
`make input.txt`
  Create an input file for the example (with help of `gen_input`).

## Usage

`square inputfile outputfile N`
  Run the example on the named inputfile (optional, default value is "input.txt") and produce the named outputfile (optional, default value is "output.txt"). N is the number of threads to be used (optional).
`gen_input [LN] > inputfile`
  Generate a file named inputfile consisting of LN lines each containing one integer. If not specified, LN is assumed to be 1000000.
To run a short version of this example, e.g., for use with Intel® Threading Tools:
  Build a debug version of the example (see the build directions).
  Prepare an inputfile with about 5,000 lines of text (see the instruction above).
  Run it with this inputfile and the desired number of threads, e.g., `square inputfile outputfile 4`.

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