C ++ type conversion Operator

1. static_cast

Float X;

Cout <static_cast <int> (X );

F (static_cast <string> ("hello ");

 

2. dynamic_cast

Down the transformation of polymorphism types

Class car;

Class Cabriolet: Public Car {...};

Class limosine: Public Car {...};

Void F (car * CP ){

Cabriolet * P = dynamic_cast <Cabriolet *> (CP );

If (P = NULL ){

.........

}

}

If the type conversion fails, dynamic_cast throws a bad_cast exception.

Note: When Using polymorphism technology, avoid writing "program behavior depends on the specific type ".

 

3. const_cast

Constant of the set or location type, which can also be modified by volatile

 

4. reinterpret_cast

Using this transformation usually results in portability.