断言是不太安全的...我说的是你传地址就不要想删除了...因为字符串被当成常量用的...所以指针是没办法删除的....就是说你调用delete[]时候引发错误
下面是对的,我上面没删除指针...
#include<iostream>
#include<cstring>
using namespace std;
class Student
{
public:
    Student(char *name = "qwe", int stature = 180, int avoirdupois = 75);
    Student(const Student &stu);
    void demo();
public:
    ~Student();
private:
    char * m_name;
    int m_stature, m_avoirdupois;
};
Student::Student(char *name, int stature, int avoirdupois)
{
    m_name = new char[sizeof(name)+1];
    strcpy(m_name,name);
    this->m_stature = stature;
    this->m_avoirdupois = avoirdupois;
    cout << "缺省构造函数" << endl;
    cout << "姓名：" << this->m_name <<",身高：" << this->m_stature << ",体重：" << this->m_avoirdupois << endl;
}
void Student::demo()
{
cout << "姓名：" << this->m_name <<",身高：" << this->m_stature << ",体重：" << this->m_avoirdupois << endl;
}
Student::~Student()
{
    delete[] m_name;
}
int main()
{
    Student s("qwt1",185,132);
    s.demo();
    return 0;
}

谢谢你了

sizeof(name);name是指针，指针的大小不是4吗，是否应该用strlen()

不是楼上说的问题...再这用的话可以测试从开始到结束的内存长度.这里刚好能用是因为char是一个字节...