Python-Programmes-basic/calculator.py at master · Harsha200105/Python-Programmes-basic · GitHub

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# -*- coding: utf-8 -*-
"""
Created on Sun Jun  3 20:39:21 2018

@author: Lalit
"""

def add(x,y):
    return x+y

def subtract(x,y):
    return x-y

def multiplication(x,y):
    return x*y

def divide(x,y):
    return x/y

print("select operations.")
print("1.Add")
print("2.Subtract")
print("3.Multiply")
print("4.Divide")

choice = input("Enter choice(1/2/3/4):")

num1 = int(input("Enter first number:"))
num2 = int(input("Enter second number:"))

if choice == '1':
    print(num1,"+",num2, "=", add(num1 , num2))

elif choice == '2':
    print(num1,"-",num2, "=", subtract(num1 , num2))


elif choice == '3':
    print(num1,"*",num2, "=", multiplication(num1 , num2))


elif choice == '4':
    print(num1,"/",num2, "=", divide(num1 , num2))


else:
    print("Invalid choice")