C语言关键字描述和举例

C语言的关键字包括：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。举例：auto用于声明自动变量，如：auto int i; break用于终止当前循环，如：while(1) { ... break; ... }