= C4 Usage =
First, set the `${CLASSPATH}` environment variable, and other environment variable by sourcing the `setup.sh` file in the `XTC` source directory.
The following code snippet assumes `XTC` source tree is located in your home directory.
{{{
#!sh
> cd ~/xtc && source setup.sh
}}}

Now that the environment to run C4 is setup. You can run C4 with the following command.

{{{
#!sh
> java xtc.lang.c4.C4 -printSource -transform [Pre-processed Source File]
}}}