Simple calculator program in python; In this tutorial, you will learn how to create a basic calculator that can add, subtract, multiply or divide depending upon the input from the user.
To understand this python program, you should have knowledge of python functions.
To create a basic method in python program, which is used to perform arithmetic operations.
1. Addition
Let’s do our first operation of Addition here:
def add(x, y):
return x + y;
We used a simple function so that our code remains modular.
2. Subtraction
Second operation involves subtracting two numbers:
def subtract(x, y):
return x - y;
3. Multiplication
Third operation involves multiplying two numbers:
def multiply(x, y):
return x * y;
4. Division
Fourth operation involves dividing two numbers:
def devide(x, y):
return x / y;
Calculator Program in Python using Functions
# Program create a simple calculator
# This function adds two numbers
def add(x, y):
return x + y
# This function subtracts two numbers
def subtract(x, y):
return x - y
# This function multiplies two numbers
def multiply(x, y):
return x * y
# This function divides two numbers
def divide(x, y):
return x / y
print("Select operation.")
print("1.Add")
print("2.Subtract")
print("3.Multiply")
print("4.Divide")
# Take input from the user
choice = input("Enter choice(1/2/3/4): ")
num1 = float(input("Enter first number: "))
num2 = float(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,"=", multiply(num1,num2))
elif choice == '4':
print(num1,"/",num2,"=", divide(num1,num2))
else:
print("Invalid input")
Output
Select operation. 1.Add 2.Subtract 3.Multiply 4.Divide Enter choice(1/2/3/4): 1 Enter first number: 10 Enter second number: 15 10.0 + 15.0 = 25.0
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