list0806.cpp

来自「teach yourself C++ in 21 days 第五版」· C++ 代码 · 共 27 行

// Listing 8.6 - Accessing data members of objects on the heap
// using the -> operator

#include <iostream>

class SimpleCat
{
  public:
    SimpleCat() {itsAge = 2; }
    ~SimpleCat() {}
    int GetAge() const { return itsAge; }
    void SetAge(int age) { itsAge = age; }
 private:
    int itsAge;
};
 
int main()
{
   using namespace std;
   SimpleCat * Frisky = new SimpleCat;
   cout << "Frisky is " << Frisky->GetAge() << " years old " << endl;
   Frisky->SetAge(5);
   cout << "Frisky is " << Frisky->GetAge() << " years old " << endl;
   delete Frisky;
   return 0;
}