Installation
Since you have clone the repo, enter it's directory and run the following command:
./shbuild build
This will build the program and send the binary to ./build/pc. If you want to make the binary executable everywhere, run the following command:
sudo ./shbuild install
Usage
The usage is very simple, you just need to choose a flag for the operation and two more numbers:
pc [-op] <NUM> <NUM>
Here is an example:
pc -a 40 32
The result will be 72.
For more info, take a look at the README.