Types:

• character char
• 64-bit integer int
• 32-bit float
• boolean bool

Expressions:

1. Literals
   1. character 'c'
   2. int 42
   3. float 3.14
   4. bool true/false
2. Arithmentic operators: +-*/%

Statements:

1. Variable definition: let TYPE NAME = EXPRESSION;
2. Assignment: NAME = EXPRESSION;
3. Return: return EXPRESSION;
4. Empty statement noop;