VS2015报两个错误但不显示错误内容。。。谁帮忙看看

Question

#include <iostream>

#include <string>

using namespace std;

/**

* 定义类：Student

* 数据成员：m_strName

* 无参构造函数：Student()

* 有参构造函数：Student(string _name)

* 拷贝构造函数：Student(const Student& stu)

* 析构函数：~Student()

* 数据成员函数：setName(string _name)、getName()

*/

class student

{

public:

student()

{ 

cout << "student()" << endl;

}

student(string _name) 

{ 

m_student = _name;

cout << "student("<<_name<<")"<< endl;

}

student(const student& stu) 

{

cout << "const student& stu" << endl;

}

~student() 

{

cout << "~student()" << endl;

}

void setName(string _name)

{

m_student = _name;

}

string getName()

{

return m_student;

}

private:

string m_student;

};

int main(void)

{

// 通过new方式实例化对象*stu

student *stu = new student;

// 更改对象的数据成员为“慕课网”

stu-> setName( "慕课网");

// 打印对象的数据成员

cout << stu->getName() << endl;

delete stu;

stu = NULL;

return 0;

}