> #include <iostream.h>

//this is not C any more
#include <iostream>

> #include <string>
> using std::string;

using std::cout;
using std::endl;

//won't compile here otherwise.


>int main()

>{
>    string foobar = " ";
>
string foobar; //is equivalent
//string has a default constructor
>     cout << "Enter foobar";
>
>     cin >> foobar;
>
>    cout << foobar;

cout << foobar << endl;

>
>   return 0;
>
>}

A lot of C++ compiles when coded like C... but if you want C, use C. I refer mainly to the fact that C++ headers look like <blah> where C headers look like >blah.h> (except for unix system headers).