calculator.py

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# John Omoluabi

# checklist
# ***********
# 1. define functions needed; add, subtract, multiply, divide
# 2. print options to user
# 3. ask for values
# 4. call functions
# 5. persist program until user wants to exit

def add(a,b):
    return f"{a} + {b} = {int(a) + int(b)}"
def subtr(a,b):
    return f"{a} - {b} = {int(a) - int(b)}"
def mult(a,b):
    return f"{a} x {b} = {int(a) * int(b)}"
def divi(a,b):
    return f"{a} / {b} = {int(a) / int(b)}"

print("A - Addition")
print("B - Subtraction")
print("C - Multiplication")
print("D - Division")


while True:
    choice=input("What Operation would you like to do?(A-D)?")
    choice=choice.lower()
    match choice:
        case "a":
            a=input("first operand: ")
            b=input("second operand: ")
            print(add(a,b))
            
        case "b":
            a=input("first operand: ")
            b=input("second operand: ")
            print(subtr(a,b))
            
        case "c":
            a=input("first operand: ")
            b=input("second operand: ")
            print(mult(a,b))
            
        case "d":
            a=input("first operand: ")
            b=input("second operand: ")
            print(divi(a,b))