Add support for commenting out lines

README.md

@@ -24,6 +24,7 @@ The currently available opcodes are as follows:
 - `p` - print out the arguments: `pHello World!` prints "Hello World!"
 - `a`, `s`, `m`, `d` - add, subtract, multiply, and divide, respectively: `a2-2` adds 2 + 2.
 - `l` - declare a variable: `lv9` declares variable `v` with value `9`; doing `p$v` prints out 9.
+- `#` - comment: the interpreter will skip this line.
 
 Here's an example "Hello world" program:
 
@@ -58,7 +59,7 @@ Read [this guide](https://git-send-email.io) for more information.
 
 - [x] Better documentation
 - [ ] Ability to explicitly print math output and assign math output to variables
-- [ ] Add support for comments (should be pretty easy)
+- [x] Add support for comments (should be pretty easy)
 - [ ] Unit testing and CI/CD
 
 ## License

src/main.rs

@@ -88,6 +88,7 @@ impl Program {
             'm' => println!("{}", eval::do_math(self.args_or_vars(arguments), '*')),
             'd' => println!("{}", eval::do_math(self.args_or_vars(arguments), '/')),
             'l' => self.add_var(arguments),
+            '#' => {}, // Do nothing for comments
             _ => panic!("SyntaxError: No such opcode: {}", self.pc)
         }
     }