Write A Program To Check Entered Number Is A Spy Number Or Not Through C# Program

In this post I am going to discuss a program called, Entered Number A Spy Number Or Not Through C# Program.

What is a Spy Number?

When you enter a natural number like 1124 then sum up its digit is equal to the product of all the digits. Like,

//Example:
Suppose n=1124
Product of digits on prod=(1 * 1 * 2 * 4) = 8
Sum of digits on sum=(1 + 1 + 2 + 4) = 8
Here, sum==prod both product and sum are equal.
Output: Spy Number

Input : 1412
Explanation : 
sum = (1 + 4 + 1 + 2) = 8
product = (1 * 4 * 1 * 2) = 8
since, sum == product == 8
Output : Spy Number

Input : 132
Explanation : 
sum = (1 + 3 + 2) = 6
product = (1 * 3 * 2) = 6
since, sum == product == 6
Output : Spy Number

C program to check number is a spy number or not:

// C# program to check
// Spy number
using System;

class ABC
{

	// boolean function to
	// check Spy number
	static bool checkSpy(int input)
	{

		int digit, sum = 0,
			product = 1;
		while (input > 0)
		{
			digit = input % 10;

			// getting the sum
			// of digits
			sum += digit;

			// getting the product
			// of digits
			product *= digit;
			input = input / 10;
		}

		// Comparing the sum
		// and product
		if (sum == product)
			return true;
		else
			return false;
	}

	// Driver code
	public static void Main()
	{
		int input = 1412;
		if (checkSpy(input))
			Console.WriteLine("The number is " +
								"a Spy number");
		else
			Console.WriteLine("The number is " +
							"NOT a Spy number");
	}
}

// This code is Contributed by vt_m.