A number is known as a Palindrome number if the reverse of the number is same as the number. For example, 121 is a palindrome number, but 123 is is not a palindrome number.

### Example: Check Palindrome Number

In the below example, the number called MyNum is checked for palindrome number. The MyNum is first stored in a variable called Num. A while loop is used on this variable to perform following operations:

• last digit of the Num variable is estimated using Num % 10 and stored in digit variable.
• reverse number is built using revNum * 10 + digit.
• last digit is removed from Num variable using Num / 10.

Finally, MyNum is compared with revNum to check whether the number is palindrome or not.

```#include <stdio.h>

static void Palindrome(int);

static void Palindrome(int MyNum) {
int revNum = 0;
int Num = MyNum;
while(Num > 0) {
int digit = Num % 10;
revNum = revNum * 10 + digit;
Num = Num / 10;
}
if (MyNum == revNum) {
printf("%i is a Palindrome number.\n", MyNum);
}
else {
printf("%i is not a Palindrome number.\n", MyNum);
}
}

int main() {
Palindrome(12521);
Palindrome(9779);
Palindrome(1000);
}
```

The above code will give the following output:

```12521 is a Palindrome number.
9779 is a Palindrome number.
1000 is not a Palindrome number.
```

5