﻿ C# - Check an integer is a palindrome integer or not

# C#: Check whether a given integer is a palindrome integer or not

## C# Sharp Math: Exercise-12 with Solution

Write a C# Sharp program to check whether a given integer is a palindrome integer or not. Return true if the number is a palindrome, otherwise return false.

A palindromic number (also known as a numeral palindrome or a numeric palindrome) is a number (such as 16461) that remains the same when its digits are reversed. In other words, it has reflectional symmetry across a vertical axis. The term palindromic is derived from palindrome, which refers to a word (such as rotor or racecar) 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, …

Sample Solution:

C# Sharp Code:

``````using System;
namespace exercises {
class Program {
static void Main(string[] args) {
int n;
n = 123456;
Console.WriteLine("Original integer value: " + n);
Console.WriteLine("Check the said number is a palindrome number or not:");
Console.WriteLine(test_is_Palindrome(n));
n = 16461;
Console.WriteLine("Original integer value: " + n);
Console.WriteLine("Check the said number is a palindrome number or not:");
Console.WriteLine(test_is_Palindrome(n));
n = -121;
Console.WriteLine("Original integer value: " + n);
Console.WriteLine("Check the said number is a palindrome number or not:");
Console.WriteLine(test_is_Palindrome(n));
}
public static bool test_is_Palindrome(int a)
{
if (a < 0) { return false; }
if (a < 10) { return true; }

var temp = a;
var b = 0;
var digit = 0;
while (temp != 0)
{
digit = temp % 10;
b = b * 10 + digit;
temp /= 10;
}
return a == b;
}
}
}
```
```

Sample Output:

```Original integer value: 123456
Check the said number is a palindrome number or not:
False
Original integer value: 16461
Check the said number is a palindrome number or not:
True
Original integer value: -121
Check the said number is a palindrome number or not:
False
```

Flowchart:

C# Sharp Code Editor:

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