72 lines
2 KiB
Python
72 lines
2 KiB
Python
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operators=["+","-", "*", "/"] #list of operators
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operatorNames=["add","subtract","multiply","divide"]
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def addNums(num1, num2):
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"""Function to return to sum of the parameters"""
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answer = num1+num2
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return answer
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def subNums(num1,num2):
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answer = num1-num2
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return answer
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def multiplyNums(num1,num2):
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answer = num1*num2
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return answer
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def divideNums(num1,num2):
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answer = num1/num2
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return answer
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def checkChoice():
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global operators
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choice = (input("Enter the operator"))
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if choice in operators:
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return choice
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else:
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print("Error!")
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return ""
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#end of choice check
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def menu():
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"""Subroutine to run the menu"""
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global operators # global variable to access the list of operators
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global operatorNames # global variable to access the list of operator names
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choice = "" #declare an empty string variable to hold the user's choice of operator
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answer = 0 #declare an integer variable to hold the result
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number1 = int(input("Enter Number 1"))
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number2 = int(input("Enter Number 2"))
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#-----------------print the accepted operators--------------------
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print ("Select the operator:")
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for i in range(0,len(operators)):
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print(operators[i]," ", operatorNames[i])
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#-----------------call the checkChoice function--------------------
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while choice=="":
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choice = checkChoice()
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#-----------------call the correct operator function--------------------
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if choice == "+":
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answer = addNums(number1,number2)
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elif choice =="-":
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answer = subNums(number1,number2)
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elif choice == "*":
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answer = multiplyNums(number1,number2)
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elif choice == "/":
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if number2 == 0:
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print('You can not divide by zero!')
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menu()
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else:
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answer = divideNums(number1,number2)
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else:
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print("sorry something went wrong!")
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#-----------------output--------------------
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print(number1, choice, number2, "=", answer)
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return
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menu()
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