Hint of operator overloading

[dover]

Could somebody give hints about writing overloading of post-increment and
pre-increment operators? Thanks!

 

[Nolan Martin]

Could somebody give hints about writing overloading of post-increment and
pre-increment operators? Thanks!

Try
this...http://jamesthornton.com/eckel/TICPP-2nd-ed-Vol-one//Chapter12.html

 

[Dave Townsend]

Here, try this. The trick is the dummy parameter (int) in the pre-increment
operator, which is used to disambiguate the ++foo and foo++ operators.

dave

class foo
{

public:
foo( int i )
:_i(i)
{}
foo()
:_i(0)
{}
// pre-increment ++foo
foo operator++()
{
_i++;
return *this;
}
// post increment foo++
foo operator++(int )
{
foo tmp = *this;
_i++;
return tmp;

}
int toInt()
{
return _i;
}
private:
int _i;

};



#include "stdafx.h"

int main(int argc, char* argv[])
{

foo f(10);
foo g(10);
foo gnew(++g);
foo fnew(f++);

int gi = g.toInt();
int fi = f.toInt();

int gnewi = gnew.toInt();
int fnewi = fnew.toInt();


return 0;
}