Parsing C is notoriously difficult because its grammar is context-sensitive and inherently ambiguous, breaking the clean separation between a compiler's lexer (which turns text into tokens) and its parser (which builds the syntax tree). Unlike modern languages designed to be easily processed with a single token of lookahead (like Go's func or Python's def), C was written in an era before formal grammars were widely adopted for programming languages, prioritizing memory-constrained, single-pass…