text: //
  //  Fraction.h
  //  9.2
  //
  //  Created by franda on 16/4/27.
  //  Copyright © 2016年 franda. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface Fraction : NSObject
  -(void)setTo:(int)n over:(int)d;
  -(int)numerator;
  -(int)denominator;
  -(void)print;
  -(double)convertToNum;
  -(void)add:(Fraction *) f;
  @end
  