一道简单的OOP题目……不会做……求源程序 半小时内速求……

有个虚拟足球俱乐部的球队经济人又新招了5名队员，他写了下面的代码，为新队员建了
一个数组，并输出数组的所有元素。其中字符串是队员的名字，而数字则是队员的年龄。
不过有个队员的名字他竟不记得了（他的名字只好用"???"表示，年龄为0）。
（1）请你为``队员"这种对象定义一个类（队员信息的输出格式自定），使程序能编译通
过（不应通过修改main()函数来完成此要求）。要求每个队员的姓名和年龄都是常量。
int main ( )
{
Member newCommers[5] = { Member( "Zhang San", 22),
Member( "Li Si", 19),
Member( "Wang Wu", 18),
Member ( "Zhao Liu", 24) };
for ( int i=0; i<5; i++)
cout << newCommers[i] << endl;
return 0;
}
（2）经济人在主程序中增加了下面的语句，想通过姓名的拼写来查询队员年龄。请你继
续他的工作，完成程序其他部分。
string name[5] = { "Zhang San", "Li Si",
"Wang Wu", "Zhao Liu",
"Pin Yin" };
MemberList list(newCommers , 5);
for (i=0; i<5; i++)
cout << list[name[i]] << endl;

http://codepad.org/lTwqgCbo

 #include <iostream>
#include <string>
using namespace std;

class Member
{
    public:
    int age;
    string name;
    Member() { age = 0; name=""; }
    Member(string n, int a)
    {
        name=n;
        age=a;
    }
    friend ostream& operator << (ostream& output, Member& m)
    {
       if (m.age == 0) 
           output<<"???"<<endl;
       else
           output<<m.name<<" "<<m.age<<endl;
       return output;
    }
};
int main()
{
Member newCommers[5] = { Member( "Zhang San", 22),
Member( "Li Si", 19),
Member( "Wang Wu", 18),
Member( "Zhao Liu", 24) };
for ( int i=0; i<5; i++)
cout << newCommers[i] << endl;
return 0;
}

Zhang San 22

Li Si 19

Wang Wu 18

Zhao Liu 24

???

 #include <iostream>
#include <string>
using namespace std;

class Member
{
    public:
    int age;
    string name;
    Member() { age = 0; name=""; }
    Member(string n, int a)
    {
        name=n;
        age=a;
    }
    friend ostream& operator << (ostream& output, Member& m)
    {
       if (m.age == 0) 
           output<<"???"<<endl;
       else
           output<<m.name<<" "<<m.age<<endl;
       return output;
    }
    friend ostream& operator << (ostream& output, Member * m)
    {
       if (m->age == 0) 
           output<<"???"<<endl;
       else
           output<<m->name<<" "<<m->age<<endl;
       return output;
    }
};
class MemberList
{
    private: Member* members;
    private: int count;
    public: MemberList(Member m[], int c)
    {
        members=m; count=c;
    }
    Member* const operator[](const string s)
    {
        for (int i=0;i<count;i++)
            if (members[i].name == s) return &members[i];
        return new Member();
    }
};
int main()
{
Member newCommers[5] = { Member( "Zhang San", 22),
Member( "Li Si", 19),
Member( "Wang Wu", 18),
Member( "Zhao Liu", 24) };
for ( int i=0; i<5; i++)
cout << newCommers[i] << endl;

string name[5] = { "Zhang San", "Li Si",
"Wang Wu", "Zhao Liu",
"Pin Yin" };
MemberList list(newCommers , 5);
for (int i=0; i<5; i++)
cout << list[name[i]] << endl;

return 0;
}

http://codepad.org/XF13zSUr

Zhang San 22

Li Si 19

Wang Wu 18

Zhao Liu 24

???

Zhang San 22

Li Si 19

Wang Wu 18

Zhao Liu 24

???