Question

code the inverse function

5. Here is the outline of a Rational number class, i.e., a class that contains fractional numbers represented by an integer numerator and denominator). class Rational ( << operator operator public: Rational (int num, int denom) operator inverse function moiionu o loino private: int num, denom For partial credit for parts a-c, you can code the *, Integer class and << operators for the a. Code the operator; the result of multiplying two rationals is a rational whose numerator is the product of the two numerators, and who denominator is the product of the two denominators (5 points) b. Code the * operator, using the *-you must use the *-operator in your implementation... do not manipulate the data members directly. (5 points)

Answer 1

/*C++ test program that test the inverse function of Rational class.The inverse function is tested in main function. */
//main.cpp
//include header files
#include<iostream>
using namespace std;
//Class Rational
class Rational
{
private:
   //declare private data variables
   int num;
   int denom;
public:
   /*default constructor*/
   Rational()
   {
       num=0;
       denom=1;
   }
   /*Parameter constructor with numerator and denominator*/
   Rational(int n, int d)
   {
       num=n;
       denom=d;
   }

   /*Reverse function that reverses
   the numerator into denominator and
   vice versa*/
   Rational inverse()
   {
       int temp=this->denom;
       this->denom =num;
       this->num=temp;
       return *this;
   }

   /*Overload the *= operator that returns the
   Rational of multiplication of two rational numbers*/
   Rational operator *= (Rational &ratioanl)
   {      
       this->num =this->num* ratioanl.num;
       this->denom = this->denom*ratioanl.denom;
       return *this;
   }
   //Helper method
   void display()
   {
       cout<<this->num<<"/"<<this->denom<<endl;
   }
};
//start of main funciton
int main()
{
   //create two Rational object,r
   Rational r(1,2);  
   cout<<"Prining Rational,r "<<endl;
   //call display
   r.display();
   //call inverse method
   Rational rev=r.inverse();
   cout<<"Inverse Rational"<<endl;
   //call display
   rev.display();
   //pause program output on console display
   system("pause");
   return 0;
}
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Sample Output:

Prining Rational,r 1/2 Inverse Rational 2/1 Press any key to continue ...