# Syntax Analysis


## Context-Free Grammars (CFG)

## Parse Tree

A tree representation of the derivation

parse tree has `terminals` at the leaves, `non-terminals` at the interior.

An in-order traversal of the leaves is the original input.

* leftmost derivation
* rightmost derivation

### Ambiguity

should be resolved

for example: `A + B * C` should be resolved