C++的cout是怎么识别char与int的?

Question

char在函数间传递的时候应该会先转换为int，cout是怎么识别char和int的呢

Answer 1

template<class Traits>  
basic_ostream<char,Traits>&operator<<(basic_ostream<char,Traits>&os, char ch);

basic_ostream& operator<<(int n);

https://en.cppreference.com/w...

https://en.cppreference.com/w...