Visual C++: Enumeration

// second_VC++.cpp : main project file.
#include "stdafx.h"
#include <iostream>
#include <string>
//using namespace System;
using namespace std;
//enum enum-type-name { enum-list } enum-variable;
//int main(array<System::String ^> ^args)
int main()
{
enum letters {a,b,c,d,e,f }lt;
lt = a; int i; letters ltr;
for(i = lt;i < f; i++){
ltr = letters(i);
cout << "variable lt : " <<(i)<< endl;
if(ltr == b) { cout << "\tyou found b\n"; }
if(ltr == c) { cout << "\tyou found c\n"; }
}
string str ="Visual C++";
cout << str << endl ;
cin >> i;
return 0;
}