编译和连接都没发现错误，在运行的时候弹出一个对话框，错误。
但是我没看出来哪里有错误啊！！
源代码：

#include <iostream.h>
#include <string.h>
class Student
{
  char  *Name;
  int  Age;
public:
  Student(char *namep, int age)
  {
      Age = age;
      if (namep)
      {
         Name = new char[strlen(namep+1)];
         strcpy(Name, namep);
      }
     else
        Name = NULL;
  }
  Student(Student &s)
  {
      Age = s.Age;
      if (s.Name)
      {
         Name = new char[strlen(s.Name)+1];
         strcpy(Name, s.Name);
      }
     else
         Name = NULL;
  }
  void Show()
  {
      cout << Name << ',' << Age << endl;
  }
  ~Student()
  {
      if (Name)
        delete [] Name;
  }
};
void main()
{
  Student  a("George", 20);
  Student  b=a;
  b.Show();
}

[[italic] 本帖最后由 zhiqiang 于 2007-12-1 21:15 编辑 [/italic]]

Student(Student &s):Name(0)
  {
      Age = s.Age;
      if (s.Name)
      {
         Name = new char[strlen(s.Name)+1];
         strcpy(Name, s.Name);
      }
     else
         Name = NULL;
  }

Student(char *namep, int age)
  {
      Age = age;
      if (namep)
      {
         Name = new char[strlen(namep)+1];  //这里
         strcpy(Name, namep);
      }
     else
        Name = NULL;
  }

#include <iostream>
#include <string>
class Student
{
  char *Name;
  int Age;
public:
  Student(char *namep, int age)
  {
      Age = age;
      if (namep!=NULL)
      {
         Name = new char[strlen(namep)+1];
         strcpy(Name, namep);
      }
     else
        Name = NULL;
  }
  Student(Student &s)
  {
      Age = s.Age;
      if (s.Name!=NULL)                     //
      {
         Name = new char[strlen(s.Name)+1];
         strcpy(Name, s.Name);
      }
     else
         Name = NULL;
  }
  void Show()
  {
      std::cout <<Name << ',' << Age << std::endl;
  }
  ~Student()
  {
      
  }
};
void main()
{
  Student  a("George", 20);
  Student  b=a;
  b.Show();
}

[[italic] 本帖最后由 yuyunliuhen 于 2007-12-1 21:31 编辑 [/italic]]

３楼说的对，

谢谢大家，我太粗心了！

三楼眼神好使，我看了半天都没发现哪个错误．．