?? proj9_02.cpp
字號:
#include <iostream.h>
class sample
{
private:
int counter;
public:
sample()
{
counter = 0;
}
sample operator ++() //定義前綴運算符 ++a
{
++ counter;
return *this; //返回原對象
}
sample operator ++(int) //定義后綴運算符 a++
{
sample temp(*this); //臨時對象存放原有對象值
counter ++; //原有對象增量修改
return temp; //返回原有對象值
}
void display()
{
cout << counter << endl;
}
};
void main()
{
sample obj1,obj2,obj3;
obj1.display();
obj2 = ++obj1; //前綴運算符
obj2.display();
obj3 = obj1++; //后綴運算符
obj3.display();
obj1.display();
}
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