C Program to Check the Number is a Neon Number or Not2 min read

This article is to check for neon numbers in C programming. We will two different examples in C for the Neon number.

  1. Check if the entered number is Neon number or not in C.
  2. Display all the Neon Number within a given range in C.

Neon Numbers

A number is said to be a neon number if the sum of the digits of a square of the number is equal t the original number.

Example: 9 is a Neon number (see explanation in the diagram).

Neon Number in C
Neon Number in C

C Program to Check the Number is a Neon Number or Not

The following program takes the user input for a number that the user wants to check for. Then square the number sum the digits using while loop but you can also sum the digits using for the loop, using the following code: for(i = square; i > 0; i = i/10) { sum = sum + i % 10; } instead of a while loop. And lastly, print the result accordingly to print the neon number.

Source Code:

The output of neon number in c programming.


C Program to print all the Neon Number within a Range

Output:

Enter lower range: 0
Enter the upper range: 10000

All the Neon numbers between 0 to 10000 are:
0 1 9


MORE

String Pattern Programs in C

In this tutorial, we will write various C pattern programs for String. Before that, you may go through the following topics in C. for loop …
Read More

Java Program to Find pair of Integers in Array whose sum is given Number

In this tutorial, we will write a program to find a pair of elements from an array whose sum equals a given number in java …
Read More

Program to Print Diamond Alphabet Patterns in C

In this tutorial, we will learn to write a C program to print Diamond patterns using alphabets/characters. However, in this tutorial, we will create a …
Read More

Half Diamond Pattern in C using Alphabets

In this tutorial, we will learn and code the half diamond alphabet patterns in C programming language. However, in this tutorial, we will create a …
Read More

Half Pyramid of Alphabets in C

In this tutorial, we will learn and code alphabet patterns in C programming language specifically the Half pyramid of alphabets in C programming. However, in …
Read More

Inverted Half Pyramid Pattern of Alphabets in C

In this tutorial, we will write a C program to print half Pyramid using alphabets/characters. Before that, you may go through the following topic in …
Read More