Python program to make simple calculator

In this example you will learn to create a simple calculator that can add,subtract,multiply or divide depending upon the input from the user.

Example: simple calculator by using functions.

def add(num1,num2):

  return num1+num2

 

def subtract (num1,num2):

  return num1-num2

 

def multiply (num1,num2):

  return num1*num2

 

def divide (num1,num2):

  return num1/num2

 

print("please enter your choice :\n"\

 

      "2.subtract\n"\

      "3.multiply\n"\

      "4.divide\n")

 

ch=int(input("please enter your choice :"))

num1 = int(input("Enter the first number:"))

 

if ch==1:

  print(num1+num2)

elif ch==2:

    print(num1-num2)

elif ch==3:

    print(num1*num2)

elif ch==4:

    print(num1 /num2)

 

else:

    print("invalid choice")

num2 = int(input("Enter the second number:"))

      "1.add\n"\

 

please enter your choice :1.add 2.subtract 3.multiply 4.divide please enter your choice :8 Enter the first number:8 Enter the second number:8 invalid choice










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