#include<string>
using namespace std;
class Student
{public:
void display();
private:
int num;
string name;
char sex;
};
#include<iostream>
#include"student.h"
void Student::display()
{cout<<"num:"<<num<<endl;
cout<<"name:"<<name<<endl;
cout<<"sex:"<<sex<<endl;
}
#include<iostream>
using namespace std;
class Box
{private:
double length,width,height;
public:
void set();
void show();
};
int main()
{Box m;
m.set();
m.show();
}
void Box::set()
{cin>>length;
cin>>width;
cin>>height;
}
void Box::show()
{double j;
j=length*width*height;
cout<<j<<endl;
}
#include<iostream>
using namespace std;
class Time
{public:
void set_time(void);
void show_time(void) ;
private:
int hour;
int minute;
int sec;
};