가상 소멸자 – C# (Csharp) 프로그래밍


#include "stdafx.h"
#include <stdio.h>
#include <string.h>
#define DEBUG

class A{
    char* a;
public:
	A(char* s){
		a=new char[strlen(s)+1];
		strcpy(a,s);
	}
	virtual ~A(){
		delete[] a;
		printf("Destructor of class A\n");
	}
	virtual void Print() 
	{ 
	    printf("%s\n",a);
	}
};

class B : public A{
	char* b;
public:
	B(char* s,char* t):A(t){
		b=new char[strlen(s)+1];
		strcpy(b,s);
	}
	virtual ~B(){
		delete[]b;
		printf("Destructor of class B\n");
	}
	virtual void Print(){
		A::Print();
		printf("%s\n",b);
	}
};

void main()
{
	A* pA;
	pA=new B("hello","world");
	pA->Print();
	delete pA;

#ifdef DEBUG
	//cmd
	char e;
	scanf("%c",&e);
#endif
}

#include "stdafx.h"

#include <stdio.h>

#include <string.h>

#define DEBUG

class A{

char* a;

public:

A(char* s){

a=new char[strlen(s)+1];

strcpy(a,s);

}

virtual ~A(){

delete[] a;

printf("Destructor of class A\n");

}

virtual void Print()

{

printf("%s\n",a);

}

};

class B : public A{

char* b;

public:

B(char* s,char* t):A(t){

b=new char[strlen(s)+1];

strcpy(b,s);

}

virtual ~B(){

delete[]b;

printf("Destructor of class B\n");

}

virtual void Print(){

A::Print();

printf("%s\n",b);

}

};

void main()

{

A* pA;

pA=new B("hello","world");

pA->Print();

delete pA;

#ifdef DEBUG

//cmd

char e;

scanf("%c",&e);

#endif

}

상위 클래스로 사용될 것 같은 클래스의 생성자에서 동적으로 메모리를 할당하는 경우, 소멸자를 가상으로 선언하라.