C # self-study Road 07

7. Constructors and destructors

In C + +, a constructor is the initialization of an instance of a class, an object (opening up memory space), and the constructor is destroying the object (Reclaim space).

Namespace ConsoleApplication7

{

Class Program

{

static void Main (string[] args)

{

Student s = new Student ();

Student1 S1 = new Student1 (12);

Student2 s2 = new Student2 ("Guojun");

Console.WriteLine ("Name: {0}, Age: {1}", s2.name,s2.age);

Console.WriteLine ("Name: {0}", s1.age);

Console.WriteLine ("Name: {0}, Age: {1}", s.name,s.age);

}

}

public class Student

{

public int age;

public string name;

Public Student () {}

Public Student (int a)

{

This.age = A;

}

Public Student (int A, string n)

{

This.age = A;

THIS.name = n;

}

~student ()

{

Console.WriteLine ("Student's destructor is called");

}

}

public class Student1:student

{

Public Student1 () {}

Public Student1 (int a)

{

This.age = A;

}

Public Student1 (int A, string n)

{

This.age = A;

THIS.name = n;

}

~student1 ()

{

Console.WriteLine ("Student1 's destructor is called");

}

}

public class Student2:student

{

Public Student2 () {}

Public Student2 (int a)

{

This.age = A;

}

Public Student2 (int A, string n)

{

This.age = A;

THIS.name = n;

}

~student2 ()

{

Console.WriteLine ("Student2 's destructor is called");

}

}

}

Note the time: 1. Constructors and destructors cannot be inherited, and constructors can be overloaded.

2. The destructor call order is the opposite of the constructor function.

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C # self-study Road 07