- Addition: 10.0 + 20.5
- Subtraction: 10.0 - 20.5
- Division: 10.0 / 20.5
- Factorial: 5! (must be an integer);
- Download the source code
- Extract the source folder in terminal
- type the following commands
- make
- make install
- make clean
- Then type "calc" in your terminal to access the calculator