实验四
#include <iostream>
using namespace std;
class Date
{
private:
int year;
int mouth;
int day;
public:
friend istream &operator >>(istream &, Date &);
friend ostream &operator <<(ostream &, Date &);
Date operator+(int a);
friend Date operator+(int a, Date b);
Date operator+(Date b);
Date operator++();
Date operator++(int);
};
Date Date::operator+(int a)
{
day += a;
if(day > 30)
{
int temp;
temp = day/30;
day %= 30;
mouth += temp;
if(mouth > 12)
{
temp = mouth/12;
mouth %= 12;
year += temp;
}
}
return *this;
}
Date Date::operator+(Date b)
{
Date c;
c.day = day + b.day;
c.mouth = mouth + b.mouth;
c.year = year + b.year;
if(c.day > 30)
{
int temp;
temp = c.day/30;
c.day %= 30;
c.mouth += temp;
if(c.mouth > 12)
{
temp = c.mouth/12;
c.mouth %= 12;
c.year += temp;
}
}
return c;
}
Date operator+(int a, Date b)
{
b.day += a;
if(b.day > 30)
{
int temp;
temp = b.day/30;
b.day %= 30;
b.mouth += temp;
if(b.mouth > 12)
{
temp = b.mouth/12;
b.mouth %= 12;
b.year += temp;
}
}
return b;
}
istream &operator >>(istream &input, Date &c)
{
cout << "请输入 年 月 日 中间用空格隔开" << endl;
input >> c.year >> c.mouth >> c.day;
if( c.mouth < 1 || c.mouth > 12)
{
cout << "输入 月份 错误，请重新输入" << endl;
input >> c.year >> c.mouth >> c.day;
}
if(c.day < 1 || c.day >30)
{
cout << "输入 日期 错误，请重新输入" << endl;
input >> c.year >> c.mouth >> c.day;
}
return input;
}
ostream& operator << (ostream &output, Date &tempdata)
{
output << tempdata.year << "年 " << tempdata.mouth << "月 " << tempdata.day << "日" << endl;
return output;
}
Date Date::operator++()
{
if(++day > 30)
{
day = 1;
++mouth;
if(mouth >= 12)
{
mouth = 1;
++year;
}
}
return *this;
}
Date Date::operator++(int)
{
Date temp = *this;
if(++day > 30)
{
day = 1;
++mouth;
if(mouth > 12)
{
mouth = 1;
++year;
}
}
return temp;
}
int main(int argc, char** argv) {
Date today, nextday;
cin >> today;
cout << today ;
cout << "请输入你要加的日期" << endl;
int number;
cin >> number;
nextday = number + today;
//today = today + nextday;
cout << "day + " << number << " = " << nextday ;
nextday++;
cout << "day++ = " << nextday << endl;
//cout << today;
return 0;
}
#include<iostream>
using namespace std;
class CFraction
{
public:
friend istream &operator >> (istream &, CFraction &);
friend ostream &operator << (ostream &, CFraction &);
private:
int nume;
int deno;
};
istream &operator >>(istream &input, CFraction &c)
{
cout << "请输入分子和分母：" << endl;
input >> c.nume >> c.deno;
if(c.deno == 0)
{
cout << "分母不能为0，请重新输入。" << endl;
input >> c.nume >> c.deno;
}
return input;
}
ostream &operator << (ostream &output, CFraction &c)
{
output << c.nume << "/" << c.deno;
return output;
}
int main()
{
CFraction grade;
cin >> grade;
cout << grade;
return 0;
}实验五
#include<iostream>
#include<cstring>
using namespace std;
class Student{
public:
void ReadData();
void OutputData();
protected:
string num;
string name;
string sex;
};
void Student::ReadData()
{
cout << "请输入学号, 姓名，性别：";
cin >> num >> name >> sex;
}
void Student::OutputData(){
cout << "num = " << num << endl;
cout << "name = " << name << endl;
cout << "sex = " << sex << endl;
}
class Graduate:public Student{
public :
void Set_Research();
void ResearchWork();
private :
string R_Interest;
};
void Graduate::Set_Research()
{
cout << "请输入研究方向：" ;
cin >> R_Interest;
}
void Graduate::ResearchWork()
{
cout << "num = " << num << endl;
cout << "R_Interest = " << R_Interest << endl;
}
int main(){
Graduate grad;
grad.ReadData();
grad.OutputData();
grad.Set_Research();
grad.ResearchWork();
return 0;
} 实验六
#include<iostream>
#include<math.h>
using namespace std;
const double PI = 3.14157;
class Point
{
public:
Point(double, double);
~Point();
protected :
double x;
double y;
};
class Circle : public Point
{
public:
Circle(double, double, double);
~Circle();
protected :
double radious;
};
Point::Point(double a, double b){
x = a;
y = b;
}
Point::~Point(){
cout << "Point的析构函数~" << endl;
}
Circle::Circle(double a, double b, double r):Point(a, b)
{
radious = r;
}
Circle:: ~Circle (){
cout << "Circle的析构函数~" << endl;
}
class Cylinder : public Circle{
public:
Cylinder(double, double, double, double);
~Cylinder();
void Volume();
private :
double height;
};
Cylinder:: Cylinder(double a, double b, double r, double h)
:Circle(a, b, r), height(h){}
void Cylinder::Volume(){
double volume = pow( radious , 2.0) * PI * height;
cout << "圆柱体的体积为： " << volume << endl;
}
Cylinder::~Cylinder(){
cout << "Cylinder的析构函数~" << endl;
}
int main (){
Cylinder cy11(1, 1, 10, 100);
cy11.Volume();
return 0;
return 0;
}
#include<iostream>
#include<cstring>
#include<string.h>
using namespace std;
class Teacher{
public:
Teacher(string, int, string, string, string, string);
~Teacher(){}
void display();
protected:
string name;
int age;
string sex;
string address;
string phonenumber;
string title;
};
Teacher::Teacher(string nam, int a, string s, string add, string phone, string t){
name = nam;
age = a;
sex = s;
address = add;
phonenumber = phone;
title = t;
}
void Teacher::display(){
cout << "name : " << name << endl;
cout << "age : " << age << endl;
cout << "sex : " << sex << endl;
cout << "title : " << title << endl;
cout << "address : " << address << endl;
cout << "phonenumber : " << phonenumber << endl;
}
class Cadre{
public:
Cadre(string nam, int a, string s, string add, string ph, string pos) ;
~Cadre(){}
protected:
string name;
int age;
string sex;
string address;
string phonenumber;
string post;
};
Cadre::Cadre(string nam, int a, string s, string add, string ph, string pos) {
name = nam;
age = a;
sex = s;
address = add;
phonenumber = ph;
post = pos;
}
class Teacher_Cadre : public Teacher, public Cadre
{
public:
Teacher_Cadre(string nam, int a, string s, string add, string ph, string ti, string pos, double wa);
void show();
protected:
double wages;
};
Teacher_Cadre::Teacher_Cadre(string nam, int a, string s, string add, string ph, string ti, string pos, double wa)
: Teacher(nam, a, s, add, ph, ti),Cadre(nam, a, s, add, ph, pos)
{
wages = wa;
}
void Teacher_Cadre::show()
{
display();
cout << "post : " << post << endl;
cout << "wages : " << wages << endl;
}
int main(){
Teacher_Cadre tc1("MR.甘", 28, "男", "河南大学金明校区", "123456789", "优秀老师", "软件教师", 8000.0);
tc1.show();
return 0;
return 0;
}