Even and Odd Number Program

Even and Odd Number Program. Are you eager to learn coding and tackle basic coding questions? In this guide, we’ll walk you through a common coding challenge: determining whether a number is even or odd. We’ll provide solutions in various programming languages, including C, C++, Java, JavaScript, and Python.

By following our step-by-step approach, you’ll gain insights into problem-solving and be well-equipped to handle similar tasks.

Here’s the solution for checking if a number is even or odd in C, C++, JavaScript, and Python, following the 6-step strategy:

Even and Odd Number Program

Step 1: Understand the Problem

The task is to create a program that can identify whether a given number is even or odd.

Step 2: Design Test Cases

Let’s design a few test cases to verify the accuracy of our programs:

Input: 4
Expected Output: Even

Input: 7
Expected Output: Odd

Input: 0
Expected Output: Even

Step 3: Derive the Solution (Pseudocode)

Next, we will derive the solution using pseudocode to understand the logic without worrying about the specific syntax of the programming language

FUNCTION isEvenOrOdd(number)
    IF number MOD 2 EQUALS 0
        RETURN "Even"
    ELSE
        RETURN "Odd"
END FUNCTION

Step 4: Test the Solution

Before writing the actual code, let’s perform a dry run of the pseudocode with our test cases to ensure it works as expected.

number = 4
4 % 2 = 0,
so return "Even".

Even and Odd Number Program

Step 5: Write the Code

Now that we have a clear understanding of the logic, we can write the code in our preferred programming language.

Program to Find if Number is Even or Odd in C, C++, Java, JavaScript, Python

C
#include <stdio.h>

const char* isEvenOrOdd(int number) {
    if (number % 2 == 0) {
        return "Even";
    } else {
        return "Odd";
    }
}

int main() {
    int number;

    printf("Enter a number: ");
    scanf("%d", &number);

    const char* result = isEvenOrOdd(number);

    printf("The number is: %s\n", result);

    return 0;
}
C

C++
#include <iostream>
using namespace std;

const char* isEvenOrOdd(int number) {
    if (number % 2 == 0) {
        return "Even";
    } else {
        return "Odd";
    }
}

int main() {
    int number;

    cout << "Enter a number: ";
    cin >> number;

    const char* result = isEvenOrOdd(number);

    cout << "The number is: " << result << endl;

    return 0;
}
C++

Java
import java.util.Scanner;

public class EvenOddChecker {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter a number: ");
        int number = scanner.nextInt();

        String result = isEvenOrOdd(number);

        System.out.println("The number is: " + result);

        scanner.close();
    }

    public static String isEvenOrOdd(int number) {
        if (number % 2 == 0) {
            return "Even";
        } else {
            return "Odd";
        }
    }
}
Java

JavaScript
function isEvenOrOdd(number) {
    return (number % 2 === 0) ? "Even" : "Odd";
}

const readline = require('readline').createInterface({
    input: process.stdin,
    output: process.stdout
});

readline.question('Enter a number: ', input => {
    const number = parseInt(input);
    const result = isEvenOrOdd(number);
    console.log(`The number is: ${result}`);
    readline.close();
});
JavaScript

Python
def is_even_or_odd(number):
    return "Even" if number % 2 == 0 else "Odd"

number = int(input("Enter a number: "))
result = is_even_or_odd(number)
print("The number is:", result)
Python

Step 6: Test the Code


Compile and run each respective program for its language. Test them with the provided test cases to ensure they produce the correct output.

Conclusion

Congratulations! You’ve successfully mastered the art of creating programs to determine whether a number is even or odd in multiple programming languages. With this newfound knowledge, you’re well on your way to building a strong foundation in coding and problem-solving.

Prev Question
Next Question

Leave a Comment