f0906.cpp

it is a usefull thing

//=====================================
// f0906.cpp
// 不正确的初始化尝试
//=====================================
#include<iostream>
using namespace std;
//-------------------------------------
class StudentID{
  int value;
public:
  StudentID(int id=0){
    value = id;
    cout<<"Assigning student id "<<value<<"\n";
  }
};//-----------------------------------
class Student{
  string name;
  StudentID id;
public:
  Student(string n = "noName", int ssID=0){
    cout <<"Constructing student " + n + "\n";
    name = n;
    StudentID id(ssID);
  }
};//-----------------------------------
int main(){
  Student s("Randy", 58);
}//====================================