Learning notes-operator () function, function object

# Include <iostream>
# Include <string>
Using namespace STD;
Class display
{
Public:
Void operator () (string strin) const
{
Cout <strin <Endl;
}
};

Int main ()
{
Display display;
Display. Operator () ("display ");
Display ("display ");
Int Z; // This is to hold the screen and prevent it from disappearing.
Cin> Z;
Return 0;
}

Operator Function

The reason for using display as a function is that the compiler implicitly calls the operator () function.

Because this operator also becomes the operator () function, the object dispaly becomes the function object.

 

Author: Lin yufei
Source: http://www.cnblogs.com/zhengyuhong/
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