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In this article we will show you how show to determine if a number is a palindrome
A palindromic number is a number (such as 121) that remains the same when its digits are reversed.
The term palindromic is derived from palindrome, which refers to a word (such as rotor) whose spelling is unchanged when its letters are reversed.
The first 30 palindromic numbers (in decimal) are:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 202
Example
using System;
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
int myNumber, r, sumNumber = 0, tempNumber;
// get the user input
Console.Write("Enter a Number: ");
myNumber = int.Parse(Console.ReadLine());
tempNumber = myNumber;
while (myNumber > 0)
{
r = myNumber % 10;
sumNumber = (sumNumber * 10) + r;
myNumber = myNumber / 10;
}
// display the result to the user
if (tempNumber == sumNumber)
Console.Write("The Number is a Palindrome.");
else
Console.Write("The Number is not a Palindrome");
Console.ReadLine();
}
}
}
Here is a test run
Enter a Number: 121 The Number is a Palindrome. Enter a Number: 122 The Number is not a Palindrome