Calculator Program in Python

In this python program code, we will learn to form a simple calculator which will perform a basic arithmetic operation such as addition, subtraction, multiplication, and division, depending upon the input given by the user.

Here, we have made a function named calc(n) which will further perform the desired operation.

# Algorithm

1. Define a function named calc(n).
2. In the function, sum “s” and product “p” initialize to 0 and 1 respectively.
3. Take two numbers as input from the user, further operations are performed on it.
4. For different values of i we will perform different operations and it is passed in the function calc().
5. We perform the different operation on the number which is input by the user .
6. Exit.

Code:

def calc(n):
    s=0
    p=1
    a=int(input("first number"))
    b=int(input("second number"))
    if n==1:
        s=a+b
        print("sum",s)
    elif n==2:
        p=a*b
        print("prod",p)
    elif n==3:
        s=a-b
        print("diff",s)
    else:
        p=a/b
        print("divide",p)
i=int(input("enter for calculation 1. add 2. product 3.subtract 4.divide"))
calc(i)

Output:

enter for calculation 1. add 2. product 3.subtract 4.divide 2
2
3
prod 6
enter for calculation 1. add 2. product 3.subtract 4.divide 4
first number4
second number2
divided 2.0