Ini File Manager

#include "stdafx.h"
#include <windows.h> 

class IniFile{
	public:
		IniFile(const char*); //constructor
		char* ReadValue(const char*,const char*);                     //general func to read the value
		bool WriteString(const char*,const char*,const char*);                    //func to write a string
		bool WriteInteger(const char*,const char*,int);             //func to write an integer
		bool WriteBool(const char*,const char*,bool);             //func to write a boolean
		bool WriteDouble(const char*, const char*, double);                         //func to write a double
	private:
		bool WriteiniString(const char*,const char*,const char*);                  //private func used to write all the previous types
		~IniFile(); //deconstructor
		const char* dir; //path of the file (assigned only once in the constructor)
};

#include "stdafx.h"
#include "IniFile.h"

IniFile::IniFile(const char* uri){
	dir = uri;                  //assign the path of the file
}
IniFile::~IniFile(){
	delete(dir);                //free the memory of the pointer on deconstruction
}
bool IniFile::WriteString(const char* section, const char* key, const char* value){
	return WriteiniString(section, key, value);
}
bool IniFile::WriteInteger(const char* section, const char* key, int value){
	char* buffer = new char[7];                     //buffer for the conversion from int to char*
	_itoa(value,buffer,10);                             //actually, the conversion
	return WriteiniString(section, key, buffer);
}
bool IniFile::WriteDouble(const char* section, const char* key, double value){
	const int numOfDigits = 6, bufferLength = 32;    //1st is n° of digits, 2nd is the buffer length
	char* buffer = new char[bufferLength];
	_gcvt(value,numOfDigits,buffer);                 //the conversion
	return WriteiniString(section, key, buffer);
}
bool IniFile::WriteBool(const char* section, const char* key, bool value){
	return value? WriteiniString(section, key, "true") : WriteiniString(section, key, "false");	
}
bool IniFile::WriteiniString(const char* section, const char* key, const char* value){
	return WritePrivateProfileStringA(section, key, value, dir);
}
char* IniFile::ReadValue(const char* key, const char* variable){
	const int length = 100;                          //max readable chars (you can edit the length)
	char* buffer = new char[length];             //buffer for the reading of the value
	GetPrivateProfileStringA(key,variable,NULL,buffer,length,dir);
	return buffer;
}

#include "stdafx.h"
#include "IniFile.h"
#include <iostream>

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	IniFile * file = new IniFile("D:\\test.ini");  //create the file

	file->WriteString("TEST", "String", "string");    //write some values
	file->WriteBool("TEST", "Bool", false);
	file->WriteInteger("TEST", "Int", 1234);
	file->WriteDouble("TEST", "Double", 56.78);

	cout<<file->ReadValue("TEST","String")<<endl;   //read and print them
	cout<<file->ReadValue("TEST","Bool")<<endl;   
	cout<<file->ReadValue("TEST","Int")<<endl;  
	cout<<file->ReadValue("TEST","Double")<<endl;   
	return 0;
}