почему деструктор работает вначале?

#pragma once
class Student
{
private:
    char* name;
    int course;
public:
    Student(void);
    ~Student(void);
    Student(char * nm, int c);
    void Show(void);
    Student(const Student & s);
    Student operator =(Student s)
    {
        this->name=s.name;
        this->course=s.course;
    }
    Student operator +(const int s)
    {
        course+=s;
        return *this;
    }
    Student operator ++()
    {
        course++;
        return *this;
    }
    
};

#include "StdAfx.h"
#include "Student.h"
#include <cstring>
 
 
Student::Student(void)
{
    
    name=new char[7];
    strcpy(name,"NoName");
    course=0;
    
}
 
 
Student::~Student(void)
{
    cout<<"Destructor"<<endl;
    delete name;
}
 
 
Student::Student(char * nm, int c)
{
    name=new char[strlen(nm)+1];
    strcpy(name,nm);
    course=c;
}
 
 
void Student::Show(void)
{
    cout<<"Name is "<<name<<'\n'<<"Course is "<<course<<endl;
}
 
Student::Student(const Student & s)
{
    name=new char[strlen(s.name)+1];
    strcpy(name,s.name);
    course=s.course;
}

int _tmain(int argc, _TCHAR* argv[])
{
    Student s("Tom",3);
    s++;
    s.Show();
    return 0;
}

Student operator =(Student s)
    {
        this->name=s.name;
        this->course=s.course;
    }

Student s1("Tom",3);
Student s2("Jeff",4);
s2=s1;

        this->name=s.name;
        this->course=s.course;

Student& operator =(Student s)
    {
        name=new char[strlen(s.name)+1];
        strcpy(this->name,s.name);
        this->course=s.course;
        return *this;
    }

    Student& operator = (const Student &s) {
        delete name;
        name = new char[ strlen(s.name) + 1 ];
        strcpy(name, s.name);
        course = s.course;
        return *this;
    }

Student::Student(void):
    name( new char[7] ), course(-1)
{ strcpy(name,"NoName"); }
 
Student::Student(const char * nm, int c):
    name( new char[ strlen(nm) + 1 ] ), course(c)
{ strcpy(name,nm); }

s++;

delete name;

    Student operator++(int) //постфиксный декремент
    {
        Student temp(*this);
        course++;
        return temp;
    }
    
    Student(const Student & s): //конструктор копирования
        name( new char[ strlen(s) + 1 ] ), course(s.course) 
    { strcpy(name,s.name); }