🌟 C++总计63个关键字，C语言32个关键字。

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

📝 在给变量或者常量起名称时候，不要用C++得关键字，否则会产生歧义

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