| Traditional |
| auto |
| break |
| case |
| char |
| continue |
| default |
| do |
| double |
| else |
| extern |
| float |
| for |
| goto |
| if |
| int |
| long |
| register |
| return |
| short |
| sizeof |
| static |
| struct |
| switch |
| typedef |
| union |
| unsigned |
| while |
|
| C89 Standard |
| const |
| enum |
| signed |
| void |
| volatile |
|
| C99 Standard |
| _Bool |
| _Complex |
| _Imaginary |
| inline |
| restrict |
|