Check Even or Odd
Check whether a given integer number is even or odd.
What You'll Learn
- Using the modulo operator (%)
- Applying if-else conditions
- Working with integer input
Python Check Even or Odd Program
This program helps you to learn the fundamental structure and syntax of Python programming.
# Program to check if a number is even or odd
num = int(input("Enter an integer: "))
if num % 2 == 0:
print(num, "is even")
else:
print(num, "is odd")Enter an integer: 7 7 is odd
Step-by-Step Breakdown
- 1Read an integer from the user using int(input()).
- 2Compute num % 2 to get the remainder.
- 3If remainder is 0, print that the number is even.
- 4Otherwise, print that it is odd.
Understanding Check Even or Odd
A number is
even
if it is divisible by 2 (remainder 0), otherwise it is
odd
.
We use the modulo operator %:
num % 2 == 0 → evenThis pattern is very common in basic number theory and conditional logic problems.
Let us now understand every line and the components of the above program.
Note: To write and run Python programs, you need to set up the local environment on your computer. Refer to the complete article Setting up Python Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your Python programs.
Practical Learning Notes for Check Even or Odd
This Python program is part of the "Basic Python Programs" topic and is designed to help you build real problem-solving confidence, not just memorize syntax. Start by understanding the goal of the program in plain language, then trace the logic line by line with a custom input of your own. Once you can predict the output before running the code, your understanding becomes much stronger.
A reliable practice pattern is to run the original version first, then modify only one condition or variable at a time. Observe how that single change affects control flow and output. This deliberate style helps you understand loops, conditions, and data movement much faster than copying full solutions repeatedly.
For interview preparation, explain this solution in three layers: the high-level approach, the step-by-step execution, and the time-space tradeoff. If you can teach these three layers clearly, you are ready to solve close variations of this problem under time pressure.