如何实现istream :: operator>>（const char& amp;）因为没有这样的函数？ [英] How does istream::operator>>( const char& ) as no such function is implemented?
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问题描述
查看 istream 文档，您将看到没有函数 istream& operator>>（char&）的实现，但如果编译并运行
＃include< iostream>
int main（）{
char c;
std :: cin>> C;
std :: cout<< c<< std :: endl;
return（0）;
}
给予 cin 是类istream的对象，当 std :: cin> gt>时， operator>> 的专业化称为
; c $ c>也实现为非成员函数。
istream& operator >>（istream& is，char& c）
Looking at istream documentation, you will see that there is no implementation of function istream &operator>>( char& ), but if you compile and run the code below, it will work just as expected.
#include<iostream>
int main( ) {
char c;
std::cin >> c;
std::cout << c << std::endl;
return( 0 );
}
Given cin is an object for class istream, which specialization of operator>> is called
when std::cin >> c; is executed?
解决方案
operator>> also is implemented as non-member functions.
istream& operator>> (istream& is, char& c)
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