Calculator Function Outputs Nothing

I need to design a calculator with the following UI: Welcome to Calculator! 1 Addition 2 Subtraction 3 Multiplication 4 Division Which operation are you going to use?: 1 How ma

Solution 1:

The code as it is does not work. In the addition function you return the variable sum which will conflict with the build in sum function.

So just return the added and in general avoid the sum, use something like sum_ :

This works fine for me:

print("Welcome to Calculator!")

classCalculator:
    defaddition(self,x,y):
        added = x + y
        return added
    defsubtraction(self,x,y):
        diff = x - y
        return diff
    defmultiplication(self,x,y):
        prod = x * y
        return prod
    defdivision(self,x,y):
        quo = x / y
        return quo

calculator = Calculator()

print("1 \tAddition")
print("2 \tSubtraction")
print("3 \tMultiplication")
print("4 \tDivision")
operations = int(input("What operation would you like to use?:  "))

x = int(input("How many numbers would you like to use?:  "))

if operations == 1:
    a = 0
    sum_ = 0while a < x:
        number = int(input("Please enter number here:  "))
        a += 1
        sum_ = calculator.addition(number,sum_)

    print(sum_)

Running:

$ python s.py
Welcome to Calculator!
1   Addition
2   Subtraction
3   Multiplication
4   Division
What operation would you like to use?:  1
How many numbers would you like to use?:  2
Please enter number here:  45
Please enter number here:  4590

Solution 2:

Your program takes input, runs a series of operations, and then ends without ever displaying the result. Try something like print(sum) after the while loop ends.