Summing two Fractions entered by user

This is also a question fro beginners. You have to take input from user in fraction form like
3/4, 7/9 etc and then add them and display answer in the form 4/5.
Here is the code

Figure: Program that takes two Fractional inputs and sums them to display result

Similarly, you can try many simpler logics with mathematical formulas. Try to implement the formula for square of sum of two numbers.