In der folgenden Tabelle findet man alle ANSI C Schlüsselwörter.
| auto | break | case | char | const | continue | default | do |
| double | else | enum | extern | float | for | goto | if |
| int | long | register | return | short | signed | sizeof | static |
| struct | switch | typedef | union | unsigned | void | volatile | while |
In C++ wird die Sprache um folgende Schlüsselwörter erweitert