CPP Tracing 8 (Header Files 2)

#include <iostream>
#include "gammal.h"
using namespace std;
int main(){
-gammal x("c");
-x.membership_type();
-x.upgrade();
}
//code in File "gammal.h"
/*
#include <iostream>
#include <string>
using namespace std;
class gammal{
-private:
--string membership;
-public:
--gammal(string x){
---if(x=="c"||x=="year")
----membership=x;
---else
----cout<<"error";
--}
--void membership_type(){
---if(membership=="c")
----cout<<membership<<endl;
---else if(membership=="year")
----cout<<membership<<endl;
--}
--void upgrade(){
---if(membership=="c")
----cout<<"upgrade to yearly"<<endl;
---else if(membership=="year")
----cout<<"upgrade to all life"<<endl;
--}
};
*/