Click on stack.h to get source.
// File Circlist/MultInher/stack.h
#include "circlist.h"
class stack : public virtual circlist {
public:
stack(void) {}
void push(int x);
int pop(void);
};
void stack::push(int x) { circlist::push(x); }
int stack::pop(void) { return circlist::pop(); }