// Example.h

#ifndef Example_h
#define Example_h 1
#include <math.h>

typedef char string[];
enum Error {IO, RANGE, ACCESS};

extern void swap(int & x, int & y);
  // MODIFIES: x, y
  // POST: x is y<entry> and y is x<entry>

extern float delta;
const char AT_SIGN = '@';

#endif