<string> in the header file

Question

I am trying to define a variable of type string in a class definition in a header file. Is it possible? Example:

/* Foo.h */ #include <string> class Foobar{ int a; string foo; } 

Because somehow basically I can declare a string variable, but in the header it does not recognize my string type.

Answer 1

string lives in the std . Do it:

 #include <string> class Foobar { int a; std::string foo; };