Nope, not confused about keyword concept. Normally keywords are reserved words that can't be used as identifiers because they'd make the grammar ambiguous. C t

Nope, not confused about keyword concept. Normally keywords are reserved words that can't be used as identifiers because they'd make the grammar ambiguous. C typedef names aren't like this; by definition, you use them as an identifier, it's how they come into being. Fortran is an oddball example, though: whitespace is optional (Fortan77), and keywords can be used as identifiers, making parsing difficult. There are reasons more modern languages make different choices in design.