include<iostream>
using namespace std;
class date
{
public:
    date(int year=1900,int month=1,int day=1) {Xyear=year; Xmonth=month; Xday=day;}
    date(date &p);
    int GetYear()  {return Xyear;}
    int Getmonth() {return Xmonth;}
    int Getday()   {return Xday;}
    void showdate();
private:
    int Xyear,Xmonth,Xday;
};

date::date(date &p)
{
    Xyear=p.Xyear;
    Xmonth=p.Xmonth;
    Xday=p.Xday;
}

inline void date::showdate()
{
    cout<<"出生日期："<<Xyear<<"年"<<Xmonth<<"月"<<Xday<<"日"<<endl;
}

class people
{
public:
    people(int no,char sex,date birthday,int id);
    people(people &);
    ~people();
    void showpeople();

private:
    int No,Id;
    char Sex;
    date Birthday;
};

people::people(int no,char sex,date birthday,int id):Birthday(birthday)
{
    int    No=no;
    char Sex=sex;
    int Id=id;
}

people::people(people &) {}

people::~people() {}

 inline void people::showpeople()
{
    cout<<"编号为："<<No<<"性别为："<<Sex<<"出生日期为："<<Birthday.showdate()<<"身份证为："<<Id<<endl;
}

void main()
{
    date aa(1986,5,24);
    int no,id;
    char sex;
    people bb(no,sex,aa,id);
    cout<<"请分别输入编号，性别，出生日期和身份证号码:"<<endl;
    cin>>no>>sex>>aa.GetYear()>>aa.Getmonth()>>aa.Getday()>>id;
    cout<<"我的信息是:"<<endl;
    bb.showpeople();
}

我不知道该怎么去修改这几个错误
谢谢了
错误:
--------------------Configuration: lch - Win32 Debug--------------------
Compiling...
a1.cpp
D:\lch\a1.cpp(55) : error C2679: binary '<<' : no operator defined which takes a right-hand operand of type 'void' (or there is no acceptable conversion)
D:\lch\a1.cpp(65) : error C2679: binary '>>' : no operator defined which takes a right-hand operand of type 'int' (or there is no acceptable conversion)
Error executing cl.exe.

lch.exe - 2 error(s), 0 warning(s)

cin>>no>>sex>>aa.GetYear()>>aa.Getmonth()>>aa.Getday()>>id;
拿这句来讲，
people类的成员函数GetYear()返回一个int值，只能用于右值(right-value).

showDate()函数的声明是void showdate();
一个无返回值的函数，
而这句：cout<<"编号为："<<No<<"性别为："<<Sex<<"出生日期为："<<Birthday.showdate()<<"身份证为："<<Id<<endl;
你让它cout一个void值。不可取。