private void setPath(int time) { if (time < person.totalTime) { Node personNode = person.getPersonCoordinateAtTimeT(time + 1); grids[personNode.x][personNode.y].setType(Type.BLANK); grids[personNode.x][personNode.y].repaint(); grids[personNode.x][personNode.y].revalidate(); List<Node> lastList = person.getStepListAtTimeT(time + 1); for (Node node : lastList) { int x = node.x; int y = node.y; if (x == person.getPersonCoordinateAtTimeT(time).x && y == person.getPersonCoordinateAtTimeT(time).y) { continue; } grids[x][y].setType(Type.BLANK); grids[x][y].repaint(); grids[x][y].revalidate(); } } Node personNode = person.getPersonCoordinateAtTimeT(time); grids[personNode.x][personNode.y].setType(Type.PERSON); grids[personNode.x][personNode.y].repaint(); grids[personNode.x][personNode.y].revalidate(); List<Node> list = person.getStepListAtTimeT(time); for (Node node : list) { int x = node.x; int y = node.y; if (x == person.getPersonCoordinateAtTimeT(time).x && y == person.getPersonCoordinateAtTimeT(time).y) { continue; } grids[x][y].setType(Type.STEP); grids[x][y].repaint(); grids[x][y].revalidate(); } }帮我写一下注释用markdown

#include<iostream> using namespace std; class Person { public: Person(string name, string phone, string email) : name_(name), phone_(phone), email_(email) {} string GetName() const { return name_; } string GetPhone() const { return phone_; } string GetEmail() const { return email_; } void SetPhone(string phone) { phone_ = phone; } void SetEmail(string email) { email_ = email; } private: string name_; string phone_; string email_; }; class AddressBook { public: AddressBook() {} void AddPerson(const Person& person) { person.push_back(person); } void RemovePerson(const string& name) { for (auto it = person.begin(); it != person.end(); ++it) { if (it->GetName() == name) { person.erase(it); break; } } } Person FindPerson(const string& name) const { for (auto& person : Person) { if (person.GetName() == name) { return person; } } return Person("", "", ""); } private: char person; }; int main() { AddressBook address_book; // 添加联系人 address_book.AddPerson(Person("张三", "13312345678", "zhangsan@qq.com")); address_book.AddPerson(Person("李四", "13987654321", "lisi@qq.com")); // 删除联系人 address_book.RemovePerson("李四"); // 查找联系人 Person person = address_book.FindPerson("张三"); if (person.GetName() != "") { cout << "姓名：" << person.GetName() << endl; cout << "电话：" << person.GetPhone() << endl; cout << "邮箱：" << person.GetEmail() << endl; } else { cout << "未找到该联系人！" << endl; } return 0; }以上代码错误，请修改正确

cout << "电话：" << person.GetPhone() << endl; cout << "邮箱：" << person.GetEmail() << endl; } else { cout << "未找到该联系人！" << endl; } return 0; } 主要修改： - 添加头文件vector。 -...

#include <iostream> #include <string> using namespace std; class Date { friend class person; public: int year,month,day; friend ostream & operator <<( ostream&os, const Date&date ) { os<<date.year<<""<<date.month<<""<<date.day; return os; } Date(int year=2000,int month=1,int day=1):year(year),month(month),day(day) {} void print() { cout<<year<<","<<month<<","<<day; } }; class person { public: string Name; string Num; Date brith; person(string Name="张三", string Num="123456789", int year=2000,int month=1,int day=1): Name(Name),Num(Num),brith(year,month,day) {} string GetName() { return Name; } string GetNum() { return Num; } Date Getbrith() { return brith; } }; bool compare(person&p1,person&p2) { if(person&p1.year>person&p2.year) { return true; } else { return false; } } if(compare(person&p1.year,person&p2.year)) { cout<<"p1的年龄大"<<endl; } else { cout<<"p2的年龄大"<<end; } class student: private person { private: int StuNum; }; class teacher:public person { private: Date Time; }; class CTA :public student,public teacher { private: int No; }; int main() { person p1("张三","123456789",2000,1,1); person p2("李四","123456789",2001,1,1); cout<<"序号"<<endl; cout<<" 1 "<<endl; cout<<" "<<p1.GetName()<<endl; cout<<" "<<p1.GetNum()<<endl; cout<<" "<<p1.Getbrith()<<endl; cout<<" 2 "<<endl; cout<<" "<<p2.GetName()<<endl; cout<<" "<<p2.GetNum()<<endl; cout<<" "<<p2.Getbrith()<<endl; }改进后的程序

os<<date.year<<"年"<<date.month<<"月"<<date.day<<"日"; return os; } Date(int year=2000,int month=1,int day=1):year(year),month(month),day(day) {} }; class Person { public: string Name; ...

用c++代码改写程序，要求：1) 将数据成员改为私有的；2) 在类体外定义成员函数实现输入和输出的功能；3）定义无参构造函数，初始化对象数据成员值为0。#include <iostream> using namespace std; class Time { public: int hour; int minute; int second; }; int main() { Time time; cin >> time.hour >> time.minute >> time.second; cout << time.hour << ":" << time.minute << ":" << time.second << endl; return 0; }

cout << hour << ":" << minute << ":" << second << endl; } }; int main() { Time time; time.setTime(); time.showTime(); return 0; } 修改后的代码将hour、minute和second数据成员改为私有的...

设计4个类：Person，Student，Employee和TeachingAssistant，并根据main()函数能输出样例内容 Person类中包括数据成员string name，函数void introduce()输入内容cout << "My name is " << name << ". " << endl;） Student类继承自Person类，包括新数据成员int studentID，继承的void introduce()输入内容包括cout << "My name is " << name << ". " << endl;cout << "I am a student. My student ID is " << studentID << "." << endl; Employee类继承自Person类，包括新数据成员string company 继承的void introduce()输入内容包括cout << "My name is " << name << ". " << endl;cout << "I am an employee. I work at " << company << "." << endl; TeachingAssistant类继承自Student类和Employee 继承的void introduce()输入内容包括cout << "My name is " << name << ". " << endl;cout << "I am a teaching assistant. I work at " << company << " and my student ID is " << studentID << "." <<endl; 此外，要求： 1. 为类设计能够初始化数据成员的构造函数， 2. 函数尽量设计为const函数， 3. 函数形参尽量使用const修饰和引用类型 4. 给定输出内容直接复制，不能修改 5. 数据成员访问控制优先使用private其次protected再次public

I work at " << Employee::company << " and my student ID is " << Student::studentID << "." << endl; } }; int main(){ Person p("Lucy"); p.introduce(); Student s("Tom", 12345); s.introduce(); ...

有以下程序：（源文件命名：E11_1.cpp) 1. #include <iostream> 2. using namespace std; 3. class Time 4.( 5. public: 6. int hour; 7. int minute; 8. int second; 9. )； 10.int main() 11. ( 12. Time time; 13. cin >> time,hour >> time.minute >time.second: 14. cout << time.hour << ":"<< time.minute << <<time.second << endl; 15. return 0; 16.) 改写程序，要求： 1)将数据成员改为私有的； 2)在类体外定义成员函数实现输入和输出的功能； 3)定义无参构造函数，初始化对象数据成员值为0。

cout << hour << ":" << minute << ":" << second << endl; } }; int main() { Time time; time.setTime(); time.showTime(); return 0; } 修改说明： 1. 将数据成员 hour、minute 和 second 改...

private int count(Node<T> node) { if (node == null) { return 0; } int leftTreeSize = count(node.left); if (leftTreeSize == Integer.MIN_VALUE) { return Integer.MIN_VALUE; } if (node.count != leftTreeSize) { return Integer.MIN_VALUE; } int rightTreeSize = count(node.right); if (rightTreeSize == Integer.MIN_VALUE) { return Integer.MIN_VALUE; } return leftTreeSize + 1 + rightTreeSize; 请为以上代码编写测试类 }

private int count(Node<Integer> node) { if (node == null) { return 0; } int leftTreeSize = count(node.left); if (leftTreeSize == Integer.MIN_VALUE) { return Integer.MIN_VALUE; } if (node....

下面的程序段用于输出： A=5 B=15 A=10 B=15 完善该程序： class Person { public: Person(int a) { A=a;B+=a; } static void f1(Person m); private: int A; static int B; }; int B=0; void Person::f1(Person m) { cout<<"A="<<m.A<<endl; cout<<"B="<<<<endl; } void main( ) { P

cout << "A=" << m.A << endl; cout << "B=" << B << endl; } int main() { Person p1(5), p2(10); Person::f1(p1); Person::f1(p2); return 0; } 输出结果为： A=5 B=5 A=10 B=15

#include <iostream> using namespace std; class Date { public: int year,month,day; Date(int year=2000,int month=1,int day=1):year(year),month(month),day(day) {} void print() { cout<<year<<","<<month<<","<<day; } }; class person { public: string Name; string Num; Date brith; person(string Name="张三", string Num="123456789123456789", int year=2000,int month=1,int day=1): Name(Name),Num(Num),brith(year,month,day) {} string GetName() { return Name; } string GetNum() { return Num; } Date Getbrith() { return brith; } }; class student: private person { private: int StNum; }; class teacher:public person { private: Date Time; }; class CTA :public student,public teacher { private: int No; }; int main() { person p1("张三","123456789123456789",2000,1,1); cout<<"序号"<<endl; cout<<" 1 "<<endl; cout<<" "<<p1.GetName()<<endl; cout<<" "<<p1.GetNum()<<endl; cout<<" "<<p1.Getbrith()<<endl; person p2("李四","123456789123456789",2001,1,1); cout<<" 2 "<<endl; cout<<" "<<p2.GetName()<<endl; cout<<" "<<p2.GetNum()<<endl; cout<<" "<<p2.Getbrith()<<endl; return 0; }no match for 'operator' and 'Date') cout怎么解决

os << date.year << "," << date.month << "," << date.day; return os; } 然后在输出person类中的Date类型成员变量时，可以使用cout<<来调用该重载函数： cout << " " << p1.Getbrith() << endl; ...

'int Time::hour' is private

这是一个编译错误，因为hour成员变量被声明为私有（private），外部代码无法直接访问它。如果你需要在类外部访问hour变量，可以提供一个公有（public）的成员函数来获取或修改hour的值。例如： cpp class Time {...

public class Person { private String name; private int age; public void setName(String name) { this.name = name; } public void setAge(int age) { this.age = age; } public String getName() { return this.name; } public int getAge() { return this.age; } public static void main(String[] args) { Person person = new Person();person.setName("张三"); person.setAge(20); System.out.println("姓名：" + person.getName() + "，年龄：" + person.getAge()); } }

这是一个Java类，类名为Person。这个类有两个私有属性，分别是String类型的name和int类型的age。类中有四个方法，分别是setName、setAge、getName和getAge。setName和setAge方法用于设置name和age属性的值，而...

FilterInfoCollection videoDevices;//摄像头设备集合 VideoCaptureDevice videoSource;//捕获设备源 const int delaytime = 500; //扫码间隔时间 ms int totalTime; //扫码最长时间 public Form1() { InitializeComponent(); } private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { comboBox1.Items.Clear(); videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice); for (int i = 0; i < videoDevices.Count; i++) comboBox1.Items.Add(videoDevices[i].Name); comboBox1.Text = comboBox1.Items[0].ToString(); } private void button2_Click(object sender, EventArgs e) { if (comboBox1.Text == null) return; videoSource = new VideoCaptureDevice(videoDevices[comboBox1.SelectedIndex].MonikerString); videoSourcePlayer1.VideoSource = videoSource; videoSourcePlayer1.Start(); textBox1.Text = "开始识读"; timer1.Interval = delaytime; timer1.Start(); totalTime = 0; } private void timer1_Tick(object sender, EventArgs e) { if (totalTime >= 20000)// 最多读20秒 { timer1.Stop(); textBox1.Text = "未识别到条形码"; return; } Bitmap barcodeImage; barcodeImage = videoSourcePlayer1.GetCurrentVideoFrame();//拍摄 if (barcodeImage != null) { // 识读条形码 BarcodeReader reader = new BarcodeReader(); reader.Options.CharacterSet = "UTF-8"; reader.Options.PossibleFormats = new List<BarcodeFormat>() { BarcodeFormat.CODE_128 }; Result resultBarcode = reader.Decode(barcodeImage); if (resultBarcode != null) { textBox1.Text = ""; textBox1.AppendText(resultBarcode.Text); timer1.Stop(); return; } } totalTime += delaytime; textBox1.Text = totalTime.ToString() + " ms"; //if (totalTime == 3000) // picture.Save("测试图片.bmp"); }怎么设置锁定后置摄像头不打开前置摄像头

for (int i = 0; i < videoDevices.Count; i++) { if (videoDevices[i].Name.ToLower().Contains("back")) { comboBox1.Items.Add(videoDevices[i].Name); } } comboBox1.Text = comboBox1.Items[0].ToString();...

void MainWindow::moveAgvs_(){ Astar astar; std::vector<std::vector<Node>> paths(agvs.size()); // 得到agv的路綫 for (int i = 0; i < agvs.size(); i++) { Node start_node = new Node(agvs[i].getCurrentX(), agvs[i].getCurrentY()); Node* end_node = new Node(agvs[i].getStartX(), agvs[i].getStartY()); Node* end_node1 = new Node(agvs[i].getEndX(), agvs[i].getEndY()); std::vector<Node> path_to_start = astar.getPath(start_node, end_node); std::vector<Node> path_to_end = astar.getPath(end_node, end_node1); // 去掉 end_node1 path_to_end.erase(path_to_end.begin()); std::vector<Node> path; path.insert(path.end(), path_to_start.begin()+1 , path_to_start.end()); path.insert(path.end(), path_to_end.begin(), path_to_end.end()); paths[i] = path; //輸出agv的路綫 std::cout << "AGV " << i << " path: "; for (int j = 0; j < path.size(); j++) { std::cout << "(" << path[j]->x << ", " <y << ")"; if (j != path.size() - 1) { std::cout << " -> "; } } std::cout << std::endl; } // 模擬運動 timer =new QTimer(this); timer->start(500); connect(timer, &QTimer::timeout, this, &MainWindow::moveAgvs);} void MainWindow::moveAgvs() { for (int i = 0; i < agvs.size(); i++) { if (! paths[i].empty()) { Node next_node = paths[i][0]; float speed = agvs[i].getSpeed(); float distance = sqrt(pow(next_node->x - agvs[i].getCurrentX(), 2) + pow(next_node->y - agvs[i].getCurrentY(), 2)); float time = distance / speed * 1000; QTimer::singleShot(time, this, = { agvs[i].setCurrentX(next_node->x); agvs[i].setCurrentY(next_node->y); std::cout << "A " << agvs[i].getid() << " next_node : " << next_node->x <<" , " << next_node->y << std::endl; std::cout << "AGV " << agvs[i].getid() << " current_x: " << agvs[i].getCurrentX() << " current_y: " << agvs[i].getCurrentY() << std::endl; this->update(); if (next_node->x == agvs[i].getEndX() && next_node->y == agvs[i].getEndY()) { //task_to_agv(i); } }); } } }，paths未識別項怎麽修改

std::cout << "AGV " << agvs[i].getid() << " current_x: " << agvs[i].getCurrentX() << " current_y: " << agvs[i].getCurrentY() << std::endl; this->update(); if (next_node->x == agvs[i].getEndX() && ...

#include <iostream> using namespace std; class Date; class Time {public: Time(int,int,int); friend void display(const Date &,const Time &); private: int hour; int minute; int sec; }; Time::Time(int h,int m,int s) {hour=h; minute=m; sec=s; } class Date {public: Date(int,int,int); friend void display(const Date &,const Time &); private: int month; int day; int year; }; Date::Date(int m,int d,int y) {month=m; day=d; year=y; } void display(const Date &d,const Time &t) { cout<<d.year<<"/"<<d.month<<"/"<<d.day<<endl; cout<<t.hour<<":"<<t.minute<<":"<<t.sec<<endl; } int main() { Time t1(10,13,56); Date d1(12,25,2004); display(d1,t1); return 0; }

其中定义了两个类：Date 和 Time，分别表示日期和时间。类中定义了构造函数，用于初始化对象的成员变量。类中还定义了友元函数 display，用于输出日期和时间。在主函数中，创建了一个时间对象 t1 和一个日期对象 d1...

class Time { public: void set_time() { cin >> hour >> minute >> sec; } void show_time() { cout << "当前时间:" << hour << " " << minute << " " << sec << endl; } private: int hour; int minute; int sec; }; int main{ Time d2; d2.set_time(); d2.show_time(); }

这段代码中定义了一个名为Time的类，其中包含了设置时间和展示时间的两个成员函数set_time和show_time。其私有成员变量有hour、minute和sec，表示时、分和秒。在主函数中，创建了一个Time类型的对象d2，通过调用set_...

package example02; /* * 2. 定义一个 Person 类。属性有: 姓名、收入、年龄、书(一本)。定义一个 Book 类; 属性有: 书名、价格。要求用 Comparable 接口实现, 使用 TreeSet集合存储, 排序规则: A. 先按照收入从高到低排序; B. 收入相等的情况下, 按照年龄从小到大排序; C. 如果收入和年龄都相等, 按照姓名排序, 字典顺序(String 类的 compareTo 方法); D. 如果以上 3 个属性都相等, 按照书排序, 先按照书价格从低到高, 如果书价格相等, 按照书名(字典顺序)。 */ public class Person implements Comparable { private String name; private int age; private double income; private Book book; public String getName() { return name; } public void setName(String name) { this.name = name; } public double getIncome() { return income; } public void setIncome(double income) { this.income = income; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public Book getBook() { return book; } public void setBook(Book book) { this.book = book; } public Person(String name, double income, int age, Book book) { super(); this.name = name; this.income = income; this.age = age; this.book = book; } public Person() { super(); // TODO Auto-generated constructor stub } public int compareTo(Person p) { // 先按照收入从高到低排序 if (income > p.income) { return -1; } else if (income < p.income) { return 1; } else { // 收入和年龄都相等，按照姓名排序 int nameCompare = name.compareTo(p.name); if (nameCompare != 0) { return nameCompare; } } } }改错

public int compareTo(Person p) { // 先按照收入从高到低排序 if (income > p.income) { return -1; } else if (income < p.income) { return 1; } else { // 收入相等的情况下, 按照年龄从小到大排序 if ...

解释代码public class NavTest : MonoBehaviour { public NavMeshAgent agent;//自身寻路代理 public Transform[] Dess; public int index = 0; private void Update() { //MoveTest(NavMeshTest); MoveTest(MoveTowardsTest); //MoveTest(TranslateTest); } public void MoveTest(FindPath path) { if (Vector3.Distance(transform.position, Dess[index].position) <= 0.5f) { if (index < Dess.Length - 1) { index += 1; } else { index = Dess.Length - 1; } } path.Invoke(); } public void NavMeshTest() { agent.SetDestination(Dess[index].position); } public void MoveTowardsTest() { transform.position = Vector3.MoveTowards(transform.position, Dess[index].position, 6 * Time.deltaTime); } public void TranslateTest() { transform.Translate((Dess[index].position - transform.position).normalized * 6 * Time.deltaTime); } }

1. 获取自身寻路代理：使用 NavMeshAgent 组件实现自身寻路代理。 2. 设置目标点：使用 Transform 数组存储多个目标点。 3. 移动测试：MoveTest 方法接受一个委托参数 path，用于调用不同的移动方式。在 MoveTest ...

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下面的程序段用于输出： A=5 B=15 A=10 B=15 完善该程序： class Person { public: Person(int a) { A=a;B+=a; } static void f1(Person m); private: int A; static int B; }; int ____ B=0; void Person::f1(Person m) { cout<<"A="<<m.A<<endl; cout<<"B="<<____<<endl; } void main( ) { P

'int Time::hour' is private

class Time { public: void set_time() { cin >> hour >> minute >> sec; } void show_time() { cout << "当前时间:" << hour << " " << minute << " " << sec << endl; } private: int hour; int minute; int sec; }; int main{ Time d2; d2.set_time(); d2.show_time(); }

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下面的程序段用于输出： A=5 B=15 A=10 B=15 完善该程序： class Person { public: Person(int a) { A=a;B+=a; } static void f1(Person m); private: int A; static int B; }; int B=0; void Person::f1(Person m) { cout<<"A="<<m.A<<endl; cout<<"B="<<<<endl; } void main( ) { P

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