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#include <iostream>
#include <cmath>
using namespace std;

class rational
{
public:

rational();
rational add(rational);

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member functions add, sub, mul, div that perform basic arithmetic on rational numbers

member functions add, sub, mul, div that perform basic arithmetic on rational numbers

A constructor that accepts a pair of integers corresponding to the numerator and denominator of the rational number. Thus passing in a numerator of 3 and a denominator of 4 would create an object...