# How do you palindrome a number in C++?

## How do you palindrome a number in C++?

Palindrome program in C++

1. Get the number from user.
2. Hold the number in temporary variable.
3. Reverse the number.
4. Compare the temporary number with reversed number.
5. If both numbers are same, print palindrome number.
6. Else print not palindrome number.

### Is a palindrome C++?

To check if a string is a palindrome or not, a string needs to be compared with the reverse of itself. To compare it with the reverse of itself, the following logic is used: 0th character in the char array, string1 is the same as 2nd character in the same string. ith character is the same as ‘length-i-1’th character.

How do you find the palindrome of a number?

The algorithm follows 3 steps:

1. Declare two variables: one stores the given number, and the other stores the reversed number.
2. Run the do-while loop until the number of digits in the reversed number are equal to the number of digits in the given number.
3. Check if the reversed number is equal to the given number.

Is 11 a palindrome number?

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, … (sequence A002113 in the OEIS). Palindromic numbers receive most attention in the realm of recreational mathematics.

## Is 010 a palindrome number?

Whether a number is a palindrome or not depends on which base it is represented in but all numbers are palindromic in some base. For example 21 is not a palindrome in base 10, but it is in base 2: 21 = 101012. We usually don’t write initial 0s in a number but if we did then 10 would also be a palindrome since it is 010.

### Can a negative number be a palindrome?

No, a negative number cannot be a palindrome. For example, -1331. (-11 x -11 x -11). -1331 is written -1331 from left to right.

What exactly is a palindrome?

According to Oxford, a palindrome (pal·in·drome /ˈpalənˌdrōm/) is “a word, phrase, or sequence that reads the same backward as forward, e.g., madam or nurses run .” We can think of lots of them from simplex:

How many digit palindromes numbers are there?

All the digits are palindromes (1,2,3,…,9) . There are also 9 palindromes with two digits (11,22,33,…,99). You can find to every two-digit number one, and only one number with three digits and with four digits. For example: For the number 34 there are 343 and 3443.