C语言的关键字共有32个,根据关键字的作用,可分其为数据类型关键字、控制语句关键字、存储类型关键字和其它关键字四类。
(1)数据类型关键字(12个):char, double, enum, float, int, long, short, signed, struct, union, unsigned, void
(2)控制语句关键字(12个):break, case, continue, default, do, else, for, goto, if, return, switch, while
(3)存储类型关键字(4个):auto, extern, register, static
(4)其它关键字(4个):const, sizeof, typedef, volatile
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