/*  sfosubsf.cpp  by K.Tsuru  */
// function ID = 707
/*************************************
SFraction class
It provides the substitution operator.
*************************************/
#ifndef SN_H
#include "sn.h"
#endif
SFraction& SFraction::operator=(const SFraction& a){
    if(this != &a){
        num = a.num;    den = a.den;
        reduceDone = a.reduceDone;
    }
    return *this;
}