在 C++ 中调用类中的运算符函数

Question

Learning C++, I got an operator function in a class but don't know how to call it:

class Getbytes
{
public:
      Getbytes();

      int operator() (unsigned char* C1, unsigned char* C2)
       {do something to C1 and C2 and return int; };
}

main ()
{

 Getbyes myBytes;

//Here, how to call the "operator() (unsigned char* C1, unsigned char*C2)"?
 myBytes??  

}

Answer 1

You call it as myBytes(); or myBytes.operator(); if you want to be verbose about it.

Of course you also need to pass the arguments the function needs. Like myBytes("foo", "bar");

Answer 2

You can call it like

Getbytes myBytes;

unsigned char s1[] = "Hello";
unsigned char s2[] = "World";

myBytes( s1, s2 );

or

myBytes.operator()( s1, s2 );

If the operator does not change the object itself of the class Getbytes then it should be declared like

int operator() (unsigned char* C1, unsigned char* C2) const;