将下列程序中的友元改成普通函数, 为此应增加类中访问私有数据的成员函数:
//===================================
//ex0807 . cpp
//===================================
class Animal{
int itsWeight;
int itsAge;
friend void setValue(Animal&, int, int);
};//-----------------------------------
void setValue(Animal& ta, int tw, int tn){
ta.itsWeight = tw;
ta.itsAge = tn;
}//----------------------------------
int main() {
Animal peppy;
setValue(pappy, 7, 9);
}//==================================
//=================================== //EX0807 . cpp //友元改成普通函数 //=================================== class Animal{ int itsWeight; int itsAge; public: void setWeight(int w){ itsWeight=w; } void setAge(int a){ itsAge=a; } }; //----------------------------------- void setValue(Animal& ta, int tw, int tn){ ta.setWeight(tw); ta.setAge(tn); }//---------------------------------- int main() { Animal peppy; setValue(pappy, 7, 9); }//==================================