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

``````# Define a function 'add_without_plus_operator' that performs addition without using the '+' operator.
# Continue the loop until the carry (b) becomes zero.
while b != 0:
# Calculate the bitwise AND of 'a' and 'b'.
data = a & b
# XOR 'a' and 'b' to get the sum without considering carry.
a = a ^ b
# Left shift the carry by 1 position.
b = data << 1
# Return the final sum.
return a

# Test the function with different inputs and print the results.
``````

Sample Output:

```12
-10
-30
```

Explanation:

The above Python code defines a function called "add_without_plus_operator()" that performs addition without using the '+' operator. It utilizes bitwise operations (AND, XOR, and left shift) to simulate addition. Here's a brief explanation:

• The function takes two integers 'a' and 'b' as input.
• It enters a loop that continues until the carry ('b') becomes zero.
• Within the loop:
• It calculates the bitwise AND of 'a' and 'b' and stores the result in 'data'.
• It XORs 'a' and 'b' to get the sum without considering the carry.
• It left-shifts the carry ('data') by 1 position.
• After the loop, the function returns the final sum ('a').
• The code then tests the function with different inputs and prints the results.

Visual Presentation:

Flowchart:

Python Code Editor :

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