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Text File  |  1991-11-16  |  490 b   |  26 lines
  1.  
  2. Listing 7
  3.  
  4. //
  5. // rational.h
  6. //
  7. #include <stdio.h>
  8.  
  9. class rational
  10.     {
  11. public:
  12.     rational() { }
  13.     rational(long n, long d) : num(n), denom(d) { }
  14.     rational operator+(rational r);
  15.     rational operator-(rational r);
  16.     rational operator*(rational r);
  17.     rational operator/(rational r);
  18.     rational &operator+=(rational r);
  19.     rational &operator-=(rational r);
  20.     rational &operator*=(rational r);
  21.     rational &operator/=(rational r);
  22.     void put(FILE *);
  23. private:
  24.     long num, denom;
  25.     };
  26.