BoilerPlate Database Sample with Class On C++

bpdb_class.cpp

/* cl:	cl /nologo /W4 bpdb_class.cpp */
/* gcc:	g++ bpdb_class.cpp -Wall -Wextra -pedantic -std=c++11 -o bpdb_class */
#include <stdio.h>

#define OPEN	1
#define CLOSED	0

class Connection
{
private:
	int SomeState;
	char *Filename;
	char *Statement;
public:	
	Connection()
	{
		printf("...SomeState = %d\n", this->SomeState);
		this->SomeState = 0;
		printf("Connection::Constructor()\n");
		printf("...SomeState = %d\n", this->SomeState);
	}
	
	void Open(char *Filename)
	{
		printf("Connection::Open()\n");
		this->SomeState = OPEN;
		this->Filename = Filename;
		printf("...SomeState = %d\n", this->SomeState);
	}

	void Execute(char *Statement)
	{
		printf("Connection::Execute()\n");
		this->Statement = Statement;
		printf("...Statement = %s\n", this->Statement);
	}
	
	void PrintStates() const
	{
		printf("Connection::PrintStates()\n");
		printf("...FileName : %s\n", this->Filename);
		printf("...Statement: %s\n", this->Statement);
	}

	void Close()
	{
		this->SomeState = CLOSED;
	}
	
	~Connection()
	{
		printf("Connection::Destructor()\n");
		Close();
		printf("...SomeState = %d\n", this->SomeState);
	}
};

void ExplicitPrint(Connection const &db)
{
	db.PrintStates();
}

int main()
{
	Connection db;
	
	db.Open("C:\\temp\\sample.db");
	db.Execute("create table People (Id int, Name text)");
	db.PrintStates();
	ExplicitPrint(db);
	
	return 0;
}