JavaScript Program to check Natural Number

Posted in JavaScript Tutorial

Updated on Jan 11, 2024

By Mari Selvan

👁️ 71 - Views

⏳ 4 mins

💬 1 Comment

JavaScript Program to check Natural Number

Photo Credit to CodeToFun

🙋 Introduction

In the realm of programming, understanding and validating numbers is a fundamental task. One common classification is that of natural numbers.

A natural number is a positive integer greater than zero.

In this tutorial, we'll explore a simple JavaScript program that checks whether a given number is a natural number or not.

📄 Example

Let's examine the JavaScript code that accomplishes this functionality.

isNaturalNumber.js

Copied

// Function to check if a number is a natural number
function isNaturalNumber(num) {
  return (num > 0);
}

// Driver program
// Replace this value with your desired number
const number = 42;

// Check if the number is a natural number
if (isNaturalNumber(number)) {
  console.log(`${number} is a natural number.`);
} else {
  console.log(`${number} is not a natural number.`);
}

💻 Testing the Program

To test the program with different numbers, replace the value of number in the code.

Output

42 is a natural number.

Run the script to see if the given number is a natural number.

🧠 How the Program Works

The program defines a function isNaturalNumber that takes a number as input and returns true if it's a natural number (greater than 0) and false otherwise.
In the main part of the program, replace the value of number with the desired number.
The program then checks if the number is a natural number using the isNaturalNumber function.
It logs whether the number is a natural number or not based on the result.

🤔 Considerations

The program assumes the input number is an integer.
For user input scenarios, additional validation may be required to handle non-integer inputs.

📏 Between the Given Range

Let's dive into the javascript code that checks and displays natural numbers in the range from 1 to 10.

checkNaturalNumbers.js

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// Function to check and display natural numbers in the range 1 to 10
function checkNaturalNumbers() {
  console.log("Natural Numbers in the range 1 to 10:");

  for (let i = 1; i <= 10; i++) {
    console.log(i);
  }
}

// Call the function to check and display natural numbers
checkNaturalNumbers();

💻 Testing the Program

Output

Natural Numbers in the range 1 to 10:
1 2 3 4 5 6 7 8 9 10

Run the script to see the natural numbers in the range from 1 to 10 displayed in the console.

🧠 How the Program Works

The program defines a function checkNaturalNumbers that uses a for loop to iterate from 1 to 10.
Inside the loop, it prints each natural number in the specified range.

🧐 Understanding the Concept of Natural Numbers

Natural numbers are a set of positive integers that start from 1 and continue indefinitely. They are often used for counting and ordering.

In this program, we check whether a given number is a natural number by verifying if it is greater than zero.

🎉 Conclusion

This javascript program serves as a foundational example for checking whether a number is a natural number or not. Understanding the characteristics of natural numbers and incorporating such checks can be essential in various programming scenarios

Feel free to incorporate and modify this code as needed for your specific use case. Happy coding!