what is an explicit function

[mamali]

Could any one explain me what is an explicit function ?

[helios]

http://lmgtfy.com/?q=explicit+function

[Bazzy]

In C++ only a constructor can be explicit:

class A
{
     A ( int ) {}; // not explicit constructor
};
class B
{
    explicit B ( int ) {};
};


A a = 1; // valid
A aa ( 2 ); // valid
B b = 1; // error, you can't use = with explicit constructor
B bb ( 2 ); // valid