c语言break可以作为变量名吗?答:不可以。break是C语言的关键字,关键字不可以用作变量名。目前C语言的关键字有32个:char, unsigned, signed, short, int, long, float, double,void, struct, union, enum, typedef, sizeof, return,auto, const, extern, register, static, volatile,if, else, switch, case, for, do, ...
17、C语言中的变量名只能由字母、数字和下划线组成,且第一个字符...答:C,D,C,B,C,D,A,C,A,DB