C++程序.docx

1.#include class Dateint year;int month;int day;public:Date(int y, int m, int d)year = y;month = m;day = d;void Display()cout year / month / day endl;int IsLearYear()return year%4=0&year%100!=0 | year%400=0;void setDay(int d)day = d;2. 2.ostream &operator(ostream &out, const Vector &v)for(int i=0; iv.size; i+)out v.datai ;return out;Vector:Vector(int v, int n)size = n;data = new intn;for(int i=0; in; i+)datai = vi;Vector:Vector()delete data;Vector:Vector(const Vector &v)size = v.size;data = new intv.size;for(int i=0; isize; i+)datai = v.datai;Vector& Vector:operator=(const Vector &v)if(this != &v)delete data;size = v.size;data = new intv.size;for(int i=0; isize; i+)datai = v.datai;return *this;int& Vector:operator(int index)return dataindex;1编写一个函数模板，用于求数组中各元素之和，并编写测试程序进行测试。函数模板声明如下：template Type Sum(Type tArray, int iSize)2定义一个抽象类CShape，它有一个纯虚函数GetLength()；派生出四边型类CSquare和圆类CCircle，在派生类中重载函数GetLength()，用于求图形的周长，编写测试程序进行测试。1参考程序： #include using namespace std;template Type Sum(Type tArray, int iSize)Type tSum = 0;for (int i = 0; i iSize; i+)tSum = tSum + tArrayi;return tSum;int main(void)int a = 1, 2, 3;double b = 1.5, 2.8, 8.9, 8;cout Sum(a, 3) endl;cout Sum(b, 4) endl;return 0;2参考程序：#include using namespace std;class CShapepublic:virtual double GetLength() const = 0;class CSquare:public CShapepublic:CSquare(double dWidth, double dHeight)m_dWidth = dWidth;m_dHeight = dHeight;double GetLength() constreturn 2 * (m_dWidth + m_dHeight);private:double m_dWidth, m_dHeight;class CCircle:public CShapepublic:CCircle(double dRadius)m_dRadius = dRadius;double GetLength() constreturn 3.1415926 * m_dRadius * m_dRadius;private:double m_dRadius;int main(void)CSquare oSquare(2, 3);cout oSquare.GetLength() endl;CCircle oCircle(10);cout oCircle.GetLength() endl;return 0;编写程序，定义抽象基类Shape(形状)，由它派生出3个派生类: Circle(圆形)、Rectangle(矩形)和Square (正方形)，用函数函数ShowArea()分别显示各种图形的面积，最后还要显示所有图形的总面积。#include / 预处理命令using namespace std;/ 使用标准命名空间stdconst double PI = 3.1415926;/ 定义常量PIclass Shapepublic:Shape() / 构造函数virtual Shape() / 析构函数virtual ShowArea() = 0;/ 显示面积static double totalArea;/ 总面积static void ShowTotalArea() cout 总面积: totalArea endl; ;class Circle: public Shapeprivate:double radius;/ 半径public:Circle(double r): radius(r) totalArea += PI * r * r; / 构造函数Circle() / 析构函数virtual ShowArea() cout 圆面积: PI * radius * radius endl; ;/ 显示面积;class Rectangle: public Shapeprivate:double length;/ 长double width;/ 宽public:Rectangle(double l, double w): length(l), width(w) totalArea += l * w; / 构造函数Rectangle() / 析构函数virtual ShowArea() cout 矩形面积: length * width endl; ;/ 显示面积;class Square: public Shapeprivate:double length;/ 边长public:Square(double l): length(l) totalArea += l * l; / 构造函数Square() / 析构函数virtual ShowArea() cout 正方形面积: length * length endl; ;/ 显示面积;double Shape:totalArea = 0;/ 初始化totalAreaint main(void)Circle c(1);/ 定义圆对象c.ShowArea();/ 显示面积Rectangle r(1, 2);/ 定义矩形对象r.ShowArea();/ 显示面积Square z(3);/ 定义正方形对象z.ShowArea();/ 显示面积Shape:ShowTotalArea();/ 显示总面积return 0; / 返回值0, 返回操作系统1设计一个类Rect，要求如下：（1）该类中的私有数据成员length，width存放它的长和宽,并且设置它们的默认值是0。（2）通过成员函数设置其长和宽，并确保长和宽都在(0，50)范围之内。 （3）实现求周长函数GetPerimeter()。2定义一个二维座标类Vector2d, 二个数据成员为double型x, y 为private属性。定义代二个参数的构造函数和一个Show( ) 函数用以输出x, y的值, 另外作为成员函数重载的运算苻”+”的功能是将此类二个对象的数据成员x和y对应相加。这些成员函数的属性均为public. 请用C+编写此程序, 并编写测试程序进行测试#include using namespace std;class Rect private:double length, width; public: Rect(double l = 0, double w = 0): length(l), width(w) void Set(double l, double w) if (length = 50 | width = 50 ) throw 数据不在指定范围(0,50)!;/ 抛出异常length = l;width = w;double GetPerimeter() return 2 * (length + width); ;int main() try/ 检查异常Rect obj(1, 8);cout 周长: obj.GetPerimeter() endl;catch (char *str)/ 捕捉异常/ 处理异常cout 异常信息: str endl;/ 输出异常信息return 0;2参考程序：#include using namespace std;class Vector2d double x, y; public: Vector2d(double a, double b): x(a), y(b) void Show() cout x y endl; Vector2d operator+(Vector2d &obj); ;Vector2d Vector2d:operator+(Vector2d &obj) return Vector2d(x + obj.x, y + obj.y); int main() Vector2d d1(3.5, 4.5), d2(2.5, 5.5), d3(0.0, 0.0);d3 = d1 + d2; d3.Show(); return 0;1编写程序：定义抽象基类Shape，由它派生出五个派生类：Circle（圆形）、Square（正方形）、 Rectangle（ 长方形）、Trapezoid （梯形）和Triangle （三角形），用虚函数分别计算各种图形的面积，并求出它们的和。要求用基类指针数组。使它的每一个元素指向一个派生类的对象。 注：主函数中定义如下对象Circle circle(12.6); Square square(3.5); Rectangle rectangle(4.5,8.4); Trapezoid trapezoid(2.0,4.5,3.2); Triangle triangle(4.5,8.4); 1#include using namespace std;class Shapepublic: virtual double area() const =0; ;class Circle:public Shapepublic:Circle(double r):radius(r) virtual double area() const return 3.14159*radius*radius; protected: double radius; ;class Square:public Shapepublic: Square(double s):side(s) virtual double area() const return side*side; protected: double side;class Rectangle:public Shapepublic: Rectangle(double w,double h):width(w),height(h) virtual double area() const return width*height; protected: double width,height; ;class Trapezoid:public Shapepublic: Trapezoid(double t,double b,double h):top(t),bottom(t),height(h) virtual double area() const return 0.5*(top+bottom)*height; protected: double top,bottom,height; ;class Triangle:public Shapepublic: Triangle(double w,double h):width(w),height(h) virtual double area() const return 0.5*width*height; protected: double width,height; ;int main()