rpn, short for Reverse Polish Notation, is a reverse polish notation calculator over integer numbers.
No particular reason. This is mostly a test. For a calculator with more features, checkout Unix dc
- libc (including an implementation of termios.h and stdio.h)
- C compiler (i.e. gcc or cproc)
- Included git submodules (Itoa and Lex)
Type make.
Type ./rpn to start the program. You will be faced with an empty input prompt. Entering something like 14 27 +p will add the numbers 14 and 27 and print the result of the summation.
Use the following commands:
| Command | Effect |
|---|---|
| any integer number | put a number on the top of the stack. |
c |
Clear the entire stack. |
D |
Remove topmost number from stack. |
d |
Duplicate topmost number and put it on the top of the stack. |
p |
Print topmost number, without any change to the stack. |
q |
Exit. |
+, -, *, /, % |
Add/Subtract/Multiply/Divide/do the modulo operation on the two topmost numbers, remove them and put the result on the top of the stack. |
Any other command or character will be ignored.