C++中0x61和尀x61有什么区别？

0x61是十六进制操作数值
\x61以字符串的形式表示一个十六进制的值，只能在字符串中用，或前后有''符号，而0x61就不能放在字符串中表示一个值。

0xhh是十六进制数的开始标志
\xhh表示一个十六进制表示的任意字符
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