Calculator program in python using function

In this python programming tutorial we are going to learn:

• calculator program in python using function

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Calculator program in python using function

The python program to make a calculator is as follows:

# Owner : TutorialsInhand Author : Devjeet Roy

def add():
    n1 = float(input("Enter first number: "))
    n2 = float(input("Enter second number: "))
    return n1+n2

def subtract():
    n1 = float(input("Enter first number: "))
    n2 = float(input("Enter second number: "))
    return n1 - n2

def multiply():
    n1 = float(input("Enter first number: "))
    n2 = float(input("Enter second number: "))
    return n1 * n2

def divide():
    n1 = float(input("Enter first number: "))
    n2 = float(input("Enter second number: "))
    return n1 / n2

if __name__ == "__main__":
    while True:    
        choice = input("1. Add\n2. Subtract\n3. Multiply\n4. Divide\n5. Exit\n")

        if choice == '1':
            print("The sum is:",add())

        elif choice == '2':
            print("The difference is:",subtract())
        
        elif choice == '3':
            print("The product is:",multiply())
        
        elif choice == '4':
            print("The quotient is:",divide())
        
        elif choice == '5':
            break
        
        else:
            print("Enter correct choice!!")

The output of the python program to make a calculator is as follows:

 

PS C:\Users\DEVJEET\Desktop\tutorialsInHand> python code.py
1. Add
2. Subtract
3. Multiply
4. Divide
5. Exit
1
Enter first number: 5
Enter second number: 7
The sum is: 12.0
1. Add
2. Subtract
3. Multiply
4. Divide
5. Exit
2
Enter first number: 12
Enter second number: 2
The difference is: 10.0
1. Add
2. Subtract
3. Multiply
4. Divide
5. Exit
3
Enter first number: 2
Enter second number: 4
The product is: 8.0
1. Add
2. Subtract
3. Multiply
4. Divide
5. Exit
5
PS C:\Users\DEVJEET\Desktop\tutorialsInHand> 

Few important tips about the program

1. We have implemented the concept of functions to design the simple calculator.

2. Function enables us to give a modular approach to our code.

 

python program to make a calculator:

You can use calculator program in python using function shown here to create your own calculator.