const std::string &getId() const {return id;}这句话中的“&"是什么...

class Component { protected:string id;string type;public:Component(const string type, const string id);virtual ~Component();string * getId(){return &id;} string * getType() {return &type;} } class CPU :public Component;class RAM :public Component;class CDROM: public Component;...

include <fstream> include <iostream> include <string> using namespace std;class Student { int ID;string name;double score;Date birth;public:void Set(int ID1,string name1,double score1);int GetID()const { return ID; } string GetName()const { return name; } ...

include <iostream> include <string> using namespace std;class singer { public:void Init(){ cout<<"输入编号 姓名:"<<endl;cin>>ID>>name;} int GetID() const { return ID;} string GetName() const { return name;} void SetScore(){ cout<<"输入"<<name<<"的得分情况:"<<...

std::string a = "abc";std::string b(a.rbegin(), a.rend());在VC2010上测试没有问题

宏的本质是原样替换。把＃define A n+2 写在程序的开头，程序里凡事出现A的地方都替换为n+2。这种写法很容易出现优先级错误，比如 A*A原意是(n+2)*(n+2)但是宏替换后的结果是：n+2*n+2即3n+2.所以这里应该写成＃define A (n+2)注意这里的A不是符号常量。定义符号常量建议是使用const关键...

例：const int a = 0;const int *const b = &a;const成员函数 又被称作常量成员函数。这种成员函数只能读取而不能修改其所属对象的数据成员。例: class A{public:bool IsSame(const A &a)const;};其它相关：const_iterator 每种容器类型中都定义了const_iterator类型，这种类型只能用于读取容器内...

你的NextNode()或其他函数没有返回类型的原因,你的代码可能是从VC++里迁移到VS2005里面来编译出现的错误吧,在VC里你的函数没有返回类型他自动默认为INT,但在VS2005里就要报你上面的错误!你试一下把返回类型加上看,看会不会出现什么问题 Node<T>::NextNode(void) const 你这句话的意识是某个类...

include <iostream> using namespace std;class Student { private:int id;float score;public:Student() { id = 0;score = 0;} Student(int id, float score) { this->id = id;this->score = score;} float getScore() {return score; } int getID() {return id; } };void max(...

回答：重载要排序的结构体或类的<号或者号,演示代码如下: #include<vector #include<algorIThm using namespace std; typedef struct ValuePerWeight //定义结构体{double vw;int i;bool operator <(const ValuePerWeight &other)const //升序排序{return vwother.vw;}//或者bool operator (const...

//刚写的，测试通过，如果有疑问，欢迎交流#include<iostream>#include<string>using namespace std;class CStudent{private:string stu_name;string stu_no;int stu_score;public:CStudent(string name, string no, int score){stu_name = name;stu_no = no;stu_score = score;}void set_name(...