C++新手问题，求好心人~~

Question

#include
using namespace std;

class Date{
public:
Date(int a,int b,int c){
year=a;
month=b;
day=c;
}
private:
int year;
int month;
int day;
};

class People{
public:
input(){
cout<<"录入people信息"< cout cin>>number;

    cout<<"性别:";
    cin>>sex;

    cout<<"出生日期:";
    cin>>birthday;

    cout<<"身份证号:";
    cin>>id;
    cout<<endl;
}
output(){
cout<<"人员信息："<<endl;
cout<<"编号:"<<number<<endl<<"性别:"<<sex<<endl;
cout<<"出生日期:"<<birthday<<endl<<"身份证号:"<<id<<endl<<endl;
}

private:
int number;
char sex;
char birthday[20];
double id;
};

int main(int argc,char argv[]){
People p1;
/ p1.input();
p2.input();
p3.input();*/

p1.output();

/* p2.output();
p3.output();*/
system("pause");
return 0;
}

Answer 1

int main(int argc,char argv[]){
People p1;
p1.input();
p1.output();
}