Question

At the moment this code only give you results for whatever fraction you put for "x", and "y" inside the main code. How do I get this existing code to ask the user to enter a fraction, and then ask another questions for another fraction, and then display the results of adding, multiplying, and dividing the fractions?

Something like:

"Please enter the first fraction: " >>> 1/2

"Please enter the second fraction:" >>> 5/3

Result of adding = x/x

Result of multiplying = x/x

Result for dividing = x/x

*** DO NOT CHANGE THE CODE TOO MUCH. MAIN GOAL IS TO ONLY MAKE IT ASK THE USER FOR INPUT ***

def gcd(m,n):
    while m%n != 0:
        oldm = m
        oldn = n

        m = oldn
        n = oldm%oldn

    return n

class Fraction:
    def __init__(self,top,bottom):
        self.num = top
        self.den = bottom

    def __str__(self): #We cannot print out fractions because python does not know how to convert an object into a string

        return str(self.num)+"/"+str(self.den)

    def __add__(self,otherfraction):
        newnum = self.num*otherfraction.den + \
                     self.den*otherfraction.num
        newden = self.den * otherfraction.den
        common = gcd(newnum,newden)

        return Fraction(newnum//common,newden//common)

    def __eq__(self, other):
        firstnum = self.num * other.den
        secondnum = other.num * self.den
      
        return firstnum == secondnum

    def __mul__(self,other):
        newnum = self.num*other.num
        newden = self.den*other.den
        common=gcd(newnum,newden)

        return Fraction(newnum//common, newden//common)

    def __truediv__ (self, other):
        newnum = self.num*other.den
        newden = self.den*other.num
        common=gcd(newnum,newden)

        return Fraction(newnum//common, newden//common)
                      
def main():

    x = Fraction(10,7)
    y = Fraction(5,9)
    print(x+y)
    print(x*y)
    print(x/y)
  
main()

  

Answer 1

def gcd(m,n):
    while m%n != 0:
        oldm = m
        oldn = n

        m = oldn
        n = oldm%oldn

    return n

class Fraction:
    def __init__(self,top,bottom):
        self.num = top
        self.den = bottom

    def __str__(self): #We cannot print out fractions because python does not know how to convert an object into a string

        return str(self.num)+"/"+str(self.den)

    def __add__(self,otherfraction):
        newnum = self.num*otherfraction.den + \
                     self.den*otherfraction.num
        newden = self.den * otherfraction.den
        common = gcd(newnum,newden)

        return Fraction(newnum//common,newden//common)

    def __eq__(self, other):
        firstnum = self.num * other.den
        secondnum = other.num * self.den
      
        return firstnum == secondnum

    def __mul__(self,other):
        newnum = self.num*other.num
        newden = self.den*other.den
        common=gcd(newnum,newden)

        return Fraction(newnum//common, newden//common)

    def __truediv__ (self, other):
        newnum = self.num*other.den
        newden = self.den*other.num
        common=gcd(newnum,newden)

        return Fraction(newnum//common, newden//common)


def readFraction():
        line = input('Please enter a fraction: ')
        x, y = line.split('/')
        x, y = int(x), int(y)
        return Fraction(x, y)


def main():


    x = readFraction()
    y = readFraction()
    print('Result of adding = ', x+y)
    print('Result of multiplying = ', x*y)
    print('Result of dividing = ', x/y)
  
main()

**************************************************
You would have to parse user input and create a fraction object.. like i did in readFraction method.


Thanks for your question. We try our best to help you with detailed answers, But in any case, if you need any modification or have a query/issue with respect to above answer, Please ask that in the comment section. We will surely try to address your query ASAP and resolve the issue.

Please consider providing a thumbs up to this question if it helps you. by Doing that, You will help other students, who are facing similar issue.