# tc-calc

Our built-in calculator. This is the REPL loop used by Terminal Click.

## Build Instructions

`cc main.c -o calc -lm`

Where `cc` is our C compiler e.g. `gcc`, `clang`, `zig cc`.

## How to Use

Run the executable `calc` to be greeted with the following prompt:

`calc>`

Now we type any valid arithmetic expression as we would in a Python REPL:

```
calc> (2+2)*(2+2)
  16
calc>
```


Bitwise operations supported too:

```
calc> 2|2
  2
calc>
```

Notice how we print the output with a bit of spacing followed by a new prompt.

**Switching Formats**

We can switch between decimal, hexadecimal and binary formats. Use the `:dec`, `:hex`, or `:bin` tags:

```
calc> :hex
  format: hex
calc> 0xA - 0x9
  0x1
calc>
```

The default tag is `:dec`.