#include<iostream>
using namespace std;
enum paople_sex{m,f};
class birthday
{
private:
    int year;
    int month;
    int day;
public:
    void birth()
    {
        cout<<"the birthday"<<endl;
        cout<<"please input the year:";
        cin>>year;
        cout<<"please input the month:";
        cin>>month;
        cout<<"please input the day:";
        cin>>day;
    }
    void print2()
    {
        cout<<year<<"."<<month<<"."<<day<<endl;
    }
};
class people
{
private:
    long int number;
    char sex;
    long int id;
public:
    void xinxi()
    {
            birthday b;
            cout<<"please input the number:";
            cin>>number;
            cout<<"please input the sex:(m/f)";
            cin>>sex;
            cout<<"please input the id:";
            cin>>id;
            b.birth();
    }
    void print1()
    {
        birthday b;
        cout<<number<<endl
            <<sex<<endl
            <<id<<endl;
        b.print2();
    }
};
void main()
{
    int i,n;
    system("color 9e");
    people p[1000];
    cout<<"How many people?";
    cin>>n;
    for(i=0;i<n;i++)
    {
        p[i].xinxi();
    }
    for(i=0;i<n;i++)
    {
        p[i].print1();
    }
}
为什么最后出来year.month.day为未赋值

3q  这个搞定了
还有一个：
输入id好像不能用long int  应该用什么呢？？？
用long int的话 放不下18位的整数。。
如果用int id[20]   说cin>>id不对  应该怎样改？？

[ 本帖最后由 guowei3758 于 2010-5-1 18:43 编辑 ]

3q 搞定了