oop

Author: ywh555hhh

ch3/05CvsCPP/cpp.cpp

@@ -0,0 +1,33 @@
+#include <iostream> // 包含输入输出流库
+using namespace std; // 使用标准命名空间
+
+// 定义一个名为 Numbers 的类
+class Numbers {
+private:
+    int* data; // 指向整数数组的指针
+    int size; // 数组的大小
+public:
+    // 构造函数，接受一个整数参数 size
+    Numbers(int size) : size(size) {
+        data = new int[size]; // 动态分配内存
+        for (int i = 0; i < size; i++) {
+            data[i] = i + 1; // 初始化数组，值为 1 到 size
+        }
+    }
+    // 析构函数，释放动态分配的内存
+    ~Numbers() {
+        delete[] data; // 释放内存
+    }
+    // 打印数组中的所有元素
+    void print() {
+        for (int i = 0; i < size; i++) {
+            cout << data[i] << endl; // 输出每个元素的值
+        }
+    }
+};
+
+int main() {
+    Numbers numbers(5); // 创建一个 Numbers 对象，数组大小为 5
+    numbers.print(); // 调用 print 方法，打印数组中的所有元素
+    return 0; // 返回 0，表示程序成功结束
+}

ch3/05CvsCPP/matrix_multiply

@@ -3,9 +3,9 @@
 
 def compile_and_measure(program_name, language):
     if language == "c":
-        compile_command = f"gcc -O2 {program_name}.c -o {program_name}"
+        compile_command = f"gcc -O3 {program_name}.c -o {program_name}"
     elif language == "cpp":
-        compile_command = f"g++ -O2 {program_name}.cpp -o {program_name}"
+        compile_command = f"g++ -O3 {program_name}.cpp -o {program_name}"
 
     # Measure compile time
     compile_start = time.time()

ch3/05CvsCPP/test.py

@@ -0,0 +1,24 @@
+#ifndef ANIMAL_H
+#define ANIMAL_H
+
+#include <iostream>
+#include <string>
+
+class Animal {
+protected:
+    std::string name;
+    int age;
+
+public:
+    Animal(std::string n, int a) : name(n), age(a) {}
+
+    virtual void makeSound() const = 0; // 纯虚函数，使Animal成为抽象基类
+
+    virtual void showInfo() const {
+        std::cout << "Name: " << name << ", Age: " << age << std::endl;
+    }
+
+    virtual ~Animal() {} // 虚析构函数，确保派生类的正确析构
+};
+
+#endif

ch3/06oop/Animal.h

@@ -0,0 +1,15 @@
+#ifndef CAT_H
+#define CAT_H
+
+#include "Animal.h"
+
+class Cat : public Animal {
+public:
+    Cat(std::string n, int a) : Animal(n, a) {}
+
+    void makeSound() const override {
+        std::cout << name << " says Meow!" << std::endl;
+    }
+};
+
+#endif

ch3/06oop/Cat.h

@@ -0,0 +1,15 @@
+#ifndef DOG_H
+#define DOG_H
+
+#include "Animal.h"
+
+class Dog : public Animal {
+public:
+    Dog(std::string n, int a) : Animal(n, a) {}
+
+    void makeSound() const override {
+        std::cout << name << " says Woof!" << std::endl;
+    }
+};
+
+#endif

ch3/06oop/Dog.h

@@ -0,0 +1,15 @@
+#ifndef MONKEY_H
+#define MONKEY_H
+
+#include "Animal.h"
+
+class Monkey : public Animal {
+public:
+    Monkey(std::string n, int a) : Animal(n, a) {}
+
+    void makeSound() const override {
+        std::cout << name << " says Ooh ooh aah aah!" << std::endl;
+    }
+};
+
+#endif

ch3/06oop/Monkey.h

@@ -0,0 +1,26 @@
+#include "Cat.h"
+#include "Dog.h"
+#include "Monkey.h"
+#include <vector>
+
+int main() {
+    std::vector<Animal*> zoo;
+
+    zoo.push_back(new Cat("Whiskers", 3));
+    zoo.push_back(new Dog("Fido", 5));
+    zoo.push_back(new Monkey("George", 7));
+    zoo.push_back(new Monkey("Mike", 3));
+
+    for (auto animal : zoo) {
+        animal->showInfo();
+        animal->makeSound();
+    }
+
+    // 清理
+    for (auto animal : zoo) {
+        delete animal;
+    }
+    zoo.clear();
+
+    return 0;
+}