网站更换服务器 seo,如何建设网络营销渠道,wordpress评论可看,建筑素材网站先上笔记内容吧#xff1a; 这次上课的内容有关 构造函数析构函数运算符重载return * this内容很细#xff0c;大家好好回顾笔记再照应程序复习吧 :) #include iostreamusing namespace std;class Integer {
public:int i;int geti () const {return this-i;}vo…先上笔记内容吧 这次上课的内容有关 构造函数析构函数运算符重载return * this 内容很细大家好好回顾笔记再照应程序复习吧 :) #include iostreamusing namespace std;class Integer {
public:int i;int geti () const {return this-i;}void seti (int i) {this-i i;}Integer(int j 0);Integer(Integer c);~Integer();
};Integer::Integer (Integer c) { //Constructer Functioni 18;cout Integer (Integer c) endl;
}Integer::Integer (int j) : i(j) { //Copy Constructer Functioncout Integer (int j) endl;
}Integer::~Integer () { //Destructer Functioncout ~Integer () endl;
}const Integer fun (const Integer in) {cout in.geti () endl;return in;
}int main (){Integer b(8);fun(b).geti();Integer a(b);return 0;
} 下面这个程序是有关运算符重载 通过 log print 可以跟踪观察到析构的顺序 同时还有引用返回、友元函数的例子 #include iostreamusing namespace std;class Integer {
private:int i;
public:int geti () const {return this-i;}void seti (int i) {this-i i;}Integer(int j 0);Integer(Integer c);~Integer();const Integer operator (const Integer in);friend const Integer operator (const Integer lhs, const Integer rhs);
};const Integer Integer::operator (const Integer in) { //Member Functioni in.i 50;//return in;return *this;
}const Integer operator (const Integer lhs, const Integer rhs) { //全局函数Integer out;out.i lhs.i rhs.i;return out;
}Integer::Integer (Integer c) { //Constructer Functioni 18;cout Integer (Integer c) endl;
}Integer::Integer (int j) : i(j) { //Copy Constructer Functioncout Integer (int j) j endl;
}Integer::~Integer () { //Destructer Functioncout ~Integer () i endl;
}int main (){Integer b(8), a, c, d;cout a.geti() a.geti() endl;d c a b;cout a.geti() a.geti() endl;cout c.geti() c.geti() endl;cout d.geti() d.geti() endl;d a b;cout d.geti() d.geti() endl;return 0;
} 接下来运算符重载作一些附加说明 , 这三个运算符可以直接使用 运算符重载的时候如果既有 成员函数又有全局函数 优先(?) eg. i (前加) Integer operator ()i (后加) Integer operator (int)括号中的 int 仅仅表示后加无其他含义 下面的这个例子可以帮助大家更好的理解 #include iostreamusing namespace std;class Integer {
private:int i;
public:int geti () const {return this-i;}void seti (int i) {this-i i;}Integer(int j 0);Integer(Integer c);~Integer();Integer operator ();Integer operator (int);const Integer operator (const Integer in);friend const Integer operator (const Integer lhs, const Integer rhs);
};Integer Integer::operator () {i;return *this;
}Integer Integer::operator (int) {Integer temp (this-i);temp.i;return temp;
}const Integer Integer::operator (const Integer in) { //Member Functioni in.i;//return in;return *this;
}const Integer operator (const Integer lhs, const Integer rhs) { //全局函数Integer out;out.i lhs.i rhs.i;return out;
}Integer::Integer (Integer c) { //Constructer Functioni 18;cout Integer (Integer c) endl;
}Integer::Integer (int j) : i(j) { //Copy Constructer Functioncout Integer (int j) j endl;
}Integer::~Integer () { //Destructer Functioncout ~Integer () i endl;
}int main (){Integer b(8), a;cout b.geti () , a.geti () endl;a b;cout b.geti () , a.geti () endl;a b;cout b.geti () , a.geti () endl;return 0;
}转载于:https://www.cnblogs.com/wushuaiyi/p/4464093.html
