operator int-C++
What is the "operator int" function below? What does it do?
class INT{
int a;public:
INT(int ix = 0)
{
a = ix;
}
/* Starting here: */
operator int()
{
return a;
}
/* End */
INT operator ++(int)
{
return a++;
}};
It gives you a way to convert from your custom INT type to another type (in this case, int) without having to call a special conversion function explicitly.
For example, with the convert operator, this code will compile:
INT i(1234);int i_2 = i; // this will implicitly call INT::operator int()
Without the convert operator, the above code won't compile, and you would have to do something else to go from an INT to an int, such as:
INT i(1234);int i_2 = i.a; // this wont compile because a is private