w3resource

Python: Add two positive integers without using the '+' operator

Python Basic - 1: Exercise-14 with Solution

Write a Python program to add two positive integers without using the '+' operator.

Note: Use bitwise operations to add two numbers.

Sample Solution:

Python Code:

def add_without_plus_operator(a, b):
    while b != 0:
        data = a & b
        a = a ^ b
        b = data << 1
    return a
print(add_without_plus_operator(2, 10))
print(add_without_plus_operator(-20, 10))
print(add_without_plus_operator(-10, -20))

Sample Output:

12
-10
-30

Pictorial Presentation:

Python Exercises: Add two positive integers without using the '+' operator.

Flowchart:

Flowchart: Python - Add two positive integers without using the '+' operator

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor :

 

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to get all possible two digit letter combinations from a digit (1 to 9) string.
Next: Write a Python program to check the priority of the four operators (+, -, *, /).

What is the difficulty level of this exercise?

Test your Python skills with w3resource's quiz



Python: Tips of the Day

Python: Debug With the Print() Function

>>> for i in range(5):
...     print(i, end=', ' if i < 4 else '\n')
... 
0, 1, 2, 3, 4
>>> for i in range(5):
...     print(f'{i} & {i*i}', end=', ' if i < 4 else '\n')
... 
0 & 0, 1 & 1, 2 & 4, 3 & 9, 4 & 16