Overloading ++ : overload unary operator « Operator Overloading « C++ Tutorial

1. C++ Tutorial
2. Operator Overloading
3. overload unary operator

#include <iostream>
using std::cout;
using std::endl;

class MyType {
  public:
    MyType (int arg = 0) : x(arg) {
    }

    bool operator!=(const MyType& arg) const {      
      cout << "comparing" << endl;  
      return x != arg.x;
    }

    int operator*() const { return x; }              

    MyType& operator++() {                          
      ++x;
      return *this;
    }

  private:
    int x;
};

int main() {
  MyType begin(3);
  MyType end(7);
  
  for( ; begin != end ; ++begin)
    cout << *begin << " ";
  
  return 0;
}

comparing
3 comparing
4 comparing
5 comparing
6 comparing