namespaceint.h

Thinking in C++, 2nd Edition, Volume 2. 英文doc版 每章源代码

//: C10:NamespaceInt.h
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 2000
// Copyright notice in Copyright.txt
#ifndef NAMESPACEINT_H
#define NAMESPACEINT_H
namespace Int {
  enum sign { positive, negative };
  class Integer {
    int i;
    sign s;
  public:
    Integer(int ii = 0) 
      : i(ii),
        s(i >= 0 ? positive : negative)
    {}
    sign getSign() const { return s; }
    void setSign(sign sgn) { s = sgn; }
    // ...
  };
} 
#endif // NAMESPACEINT_H ///:~