皮丽莉的csdn

原创 C++课后习题作业

1. #include #include using namespace std; int main() {double a,b,c,s,area; cout<<"please input a,b,c:"; cin>>a>>b>>c; if (a+b<=c) cerr<<"a+b<=c,error!"<<endl; else if(b+c<=a) cerr<<"b+c<=a,e

原创 C++作业

#include #include using namespace std; class Student { public: virtual void get()=0; virtual void display()=0; string name; int num; }; class UnderGraduate :public Student//本科生 { public: void get

原创 C++ 第四章课后习题作业

1.#include using namespace std; class Complex{ public: Complex() { real=0; imag=0; } Complex(double r,double i) { real=r; imag=i; } double getreal() { return real;

原创 Ｃ＋＋的作业

//扩展程序：创建一个三角形类 //修改create_object函数，使得程序支持三角形的创建 //和求面积、打印等操作 #include using namespace std; class Shape { public: virtual double getArea() const =0; virtual void print() const =0; virtua

原创 C++课后习题作业

1: #include using namespace std; class Student {public: void get_value() {cin>>num>>name>>sex;} void display( ) {cout<<"num: "<<num<<endl; cout<<"name: "<<name<<endl; cout<<"sex:

原创 C++课后习题作业

1: #include using namespace std; class Student {public: void get_value() {cin>>num>>name>>sex;} void display( ) {cout<<"num: "<<num<<endl; cout<<"name: "<<name<<endl; cout<<"sex:

原创 Time Data

#include class Time{ public: Time(){} Time(int h,int m,int s) { hour=h; minute=m; second=s; } friend istream & operator>>(istream &,Time &); friend ostream & operator<<(ostream &,Time &);

原创 0143928--皮丽莉--c++作业

#include #include using namespace std; #define MAXLEN 100 class Complex{ double re;//实部 double im;//虚部 public: Complex(double x=.0,double y=.0):re(x),im(y){} void display() const; //作为成员函数

原创 C++作业

原创 0143928---皮丽莉---第三章的C++作业

3.#include using namespace std; class Date {public: Date(int=1,int=1,int=2005); void display(); private: int month; int day; int year; }; Date::Date(int m,int d,int y):month(m),da

原创 0143928--皮丽莉---第三章C++作业

#include using namespace std; class Date {public: Date(int,int,int); Date(int,int); Date(int); Date(); void display(); private: int month; int day; int year; }; Date::Dat