ToFindNeonNumber.c

// C program to demonstrate whether 
// a number is Neon number or not 
#include <stdio.h> 

int Check_Neon_Number(int num) { 

	// Calculating the square of the number 
	int square = num * num; 

	// Copying the square in a variable 
	// to extract the digit 
	int n = square; 

	// Declaring a variable to store the digits 
	int digit; 

	// Initializing a variable to 
	// calculate the sum of digits 
	int sum = 0; 

	// To calculate the sum of digits 
	while (n != 0) { 

		// Extracting the digit 
		digit = n % 10; 
		sum = sum + digit; 
		n = n / 10; 
	} 

	// Checking the condition of a Neon Number 
	if (sum == num) 
		return 1; // If condition is true. 
	else
		return 0; // If condition is false. 
} 

// Driver Code 
int main() 
{ 
	int num = 9; 

	// Calling the function 
	int ans = Check_Neon_Number(num); 
	if (ans == 1) 

		// The number is Neon 
		printf("true"); 
	else

		// The number is not Neon 
		printf("false"); 
	return 0; 
}