🚀 Day 8/150 – Check Even or Odd Number in Python

Welcome back to the 150 Python Programs: From Beginner to Advanced series.

Today we will learn how to check whether a number is even or odd in Python.

This is one of the most fundamental problems in programming and helps build logic.

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🧠 Problem Statement

👉 Write a Python program to check if a number is even or odd.

1️⃣ Method 1 – Using Modulus Operator %

The most common and easiest way.

num = 7 if num % 2 == 0: print("Even number") else: print("Odd number")

Output

Odd number

✔ Simple and widely used
✔ Best for beginners

2️⃣ Method 2 – Taking User Input

Make the program interactive.

num = int(input("Enter a number: ")) if num % 2 == 0: print("Even number") else: print("Odd number")

✔ Works for any number

✔ Real-world usage

3️⃣ Method 3 – Using a Function

Functions make code reusable and clean.

def check_even_odd(n): if n % 2 == 0: return "Even" else: return "Odd" print(check_even_odd(7))

✔ Reusable logic

✔ Clean structure

4️⃣ Method 4 – Using Bitwise Operator

A more advanced and efficient way.

num = 7 if num & 1: print("Odd number") else: print("Even number")

✔ Faster at low level
✔ Used in performance-critical code

🎯 Key Takeaways

Today you learned:

• Using % operator to check even/odd
• Taking user input
• Writing reusable functions
• Using bitwise operator &