키워드는 변수의 이름으로 사용이 불가능함
| asm | auto | bool |
| break | case | catch |
| char | class | const |
| const_cast | continue | default |
| delete | do | double |
| dynamic_cast | else | enum |
| explicit | export | extern |
| false | float | for |
| friend | goto | if |
| inline | nt | long |
| mutable | namespace | new |
| operator | private | protected |
| public | register | reinterpret_cast |
| return | short | signed |
| sizeof | static | static_cast |
| struct | switch | template |
| this | throw | true |
| try | typedef | typeid |
| typename | union | unsigned |
| using | virtual | void |
| volatile | wchar_t | while |