Disable Implicit Casts

DisableImplicitCasts.cpp

#include <iostream>
using namespace std;
class CStudent
{
  public:
    CStudent() {};
    ~CStudent() {};
};
class CTeacher
{
  public:
    CTeacher() {};
    CTeacher(CStudent student)
      : m_student(student)
    {
    }
    ~CTeacher() {};
    void Teach() {cout<<"teacher"<<endl;}
  private:
    CStudent m_student;
};
// http://www.gockelhut.com/cpp-pirate/disable-implicit-casts.html
// 禁止函数调用 参数的隐式转换
template <typename T>
void foo(T) = delete;

void foo(CTeacher teacher)
{
  teacher.Teach();
}
int main()
{
  CStudent student;
  CTeacher student_teacher;
  foo(student);
}