Skip to main content

C Program to Check if a Number is Even or Odd

This C program uses a simple if-else statement to check whether a given number is even or odd. The program takes an integer input from the user and checks its remainder when divided by 2. If the remainder is 0, the number is even; otherwise, it's odd.

Code Implementation


// C Program to Check if a Number is Even or Odd

#include <stdio.h>

int main() {
    int num;

    // Ask the user to enter a number
    printf("Enter a number: ");
    scanf("%d", &num);

    // Check if the number is even or odd
    if (num % 2 == 0) {
        printf("%d is an even number.", num);
    } else {
        printf("%d is an odd number.", num);
    }

    return 0;
}

How the Program Works

The program uses the modulus operator (%) to find the remainder of the number when divided by 2. If the remainder is 0, the number is even; otherwise, it's odd.

Example Use Cases

Here are some example inputs and outputs of the program:


// Example 1: Even number
Enter a number: 10
10 is an even number.

// Example 2: Odd number
Enter a number: 11
11 is an odd number.

Tips and Variations

Here are some tips and variations to enhance the program:

* Use a function to check if a number is even or odd, and call the function from the main function. * Use a switch statement instead of if-else to check if a number is even or odd. * Use a ternary operator to simplify the code. * Add input validation to handle invalid inputs, such as non-integer values.

FAQs

Here are some frequently asked questions about the program:

Q: What is the purpose of the modulus operator (%) in the program?

A: The modulus operator (%) is used to find the remainder of the number when divided by 2. This helps to determine whether the number is even or odd.

Q: Can I use a switch statement instead of if-else in the program?

A: Yes, you can use a switch statement instead of if-else to check if a number is even or odd. However, the switch statement is not as efficient as the if-else statement in this case.

Q: How can I add input validation to the program?

A: You can add input validation to the program by checking if the input is a valid integer. You can use the scanf function to check if the input is a valid integer, and handle invalid inputs accordingly.

Labels:

Comments

Post a Comment

Popular posts from this blog

How to Use Logging in Nest.js

Logging is an essential part of any application, as it allows developers to track and debug issues that may arise during runtime. In Nest.js, logging is handled by the built-in `Logger` class, which provides a simple and flexible way to log messages at different levels. In this article, we'll explore how to use logging in Nest.js and provide some best practices for implementing logging in your applications. Enabling Logging in Nest.js By default, Nest.js has logging enabled, and you can start logging messages right away. However, you can customize the logging behavior by passing a `Logger` instance to the `NestFactory.create()` method when creating the Nest.js application. import { NestFactory } from '@nestjs/core'; import { AppModule } from './app.module'; async function bootstrap() { const app = await NestFactory.create(AppModule, { logger: true, }); await app.listen(3000); } bootstrap(); Logging Levels Nest.js supports four logging levels:...
Post a Comment
Read more

How to Fix Accelerometer in Mobile Phone

The accelerometer is a crucial sensor in a mobile phone that measures the device's orientation, movement, and acceleration. If the accelerometer is not working properly, it can cause issues with the phone's screen rotation, gaming, and other features that rely on motion sensing. In this article, we will explore the steps to fix a faulty accelerometer in a mobile phone. Causes of Accelerometer Failure Before we dive into the steps to fix the accelerometer, let's first understand the common causes of accelerometer failure: Physical damage: Dropping the phone or exposing it to physical stress can damage the accelerometer. Water damage: Water exposure can damage the accelerometer and other internal components. Software issues: Software glitches or bugs can cause the accelerometer to malfunction. Hardware failure: The accelerometer can fail due to a manufacturing defect or wear and tear over time. Symptoms of a Faulty Accelerometer If the accelerometer i...
Post a Comment
Read more

Debugging a Nest.js Application: A Comprehensive Guide

Debugging is an essential part of the software development process. It allows developers to identify and fix errors, ensuring that their application works as expected. In this article, we will explore the various methods and tools available for debugging a Nest.js application. Understanding the Debugging Process Debugging involves identifying the source of an error, understanding the root cause, and implementing a fix. The process typically involves the following steps: Reproducing the error: This involves recreating the conditions that led to the error. Identifying the source: This involves using various tools and techniques to pinpoint the location of the error. Understanding the root cause: This involves analyzing the code and identifying the underlying issue that led to the error. Implementing a fix: This involves making changes to the code to resolve the error. Using the Built-in Debugger Nest.js provides a built-in debugger that can be used to step throug...
Post a Comment
Read more