Q3. Python Program to Check Even or Odd | Solution with Explanation

 Hi friends, welcome to DailyCodeHub. Today we are going to learn how to check if a number is even or odd in Python. This is one of the most commonly asked programs in every python interview for freshers.

Question: Write a python program to check if a number is even or odd.

Method 1: Using the modulus operator

Code:

# Check even or odd using modulus operator
n = int(input("Enter a number: "))
if n % 2 == 0:
    print(n, "is Even")
else:
    print(n, "is Odd")

Output: 

Enter a number: 10

10 is even. 

Enter a number: 7 

7 is odd.

Method 2: Using Bitwise AND

Code:

# Check even or odd using bitwise AND
n = int(input("Enter a number: "))
if n & 1 == 0:
    print(n, "is Even")
else:
    print(n, "is Odd")

Output:

Enter a number: 10 

10 is Even

Method 3 : Using Ternary Operator 

Code :

# Check even or odd using ternary operator
n = int(input("Enter a number: "))
result = "Even" if n % 2 == 0 else "Odd"
print(n, "is", result)

Output: 

Enter a number: 10 

10 is even.

Explanation :

Step 1 : We take a number as input form the user and convert it to integer using int( ).

Step 2 : In method 1, we use the % operator called modulus operator. It gives the remainder when a number is divided by 2.

Step 3 : If n % 2 == 0 it means no remainder. so the number is even.

Step 4 : If n % 2! = 0 it means remainder is 1. so the number is odd.

Step 5 : In method 2, we use bitwise AND operator with 1 . If the last bit is 0 the number is                even. If last bit is 1 the number is odd.

Step 6 : In method 3 we use ternary operator to write the same logic in just one line.

Key points :

Even numbers are divisible by 2 with no remainder

Odd numbers give remainder 1 when divided by 2

% operator is called modulus operator

n % 2 == 0 means even number

n % 2 ! = 0 means odd number

0 is considered an even number in python

I hope this program was helpful. if you have any doubts please leave a comment below. keep practicing and happy coding.

Happy coding ❤️