# C program to find out the palindrome number in a range :

In this C programming tutorial, we will learn how to find out all palindrome numbers in a range. Palindrome numbers are numbers that look same if reversed. For example, *141* is a palindrome number but *122* is not.

Our program will take the start number and the end number as input and it will find out all palindrome numbers between these numbers including them.

To find out a palindrome, we will reverse the number and compare it with the original number. If both numbers are equal, means the number is a palindrome.

## C program :

Let’s take a look at the program :

```
#include <stdio.h>
int main()
{
//1
int startNumber;
int endNumber;
int i;
int currentNumber;
int reversedNumber;
int rem;
//2
printf("Enter the first number : ");
scanf("%d", &startNumber);
//3
printf("Enter the second number : ");
scanf("%d", &endNumber);
//4
printf("Palindrome number between %d and %d are : \n", startNumber, endNumber);
for (i = startNumber; i <= endNumber; i++)
{
currentNumber = i;
reversedNumber = 0;
//5
while (currentNumber)
{
rem = currentNumber % 10;
currentNumber = currentNumber / 10;
reversedNumber = reversedNumber * 10 + rem;
}
if(i == reversedNumber){
printf("%d ", i);
}
}
return 0;
}
```

### Explanation :

*The commented numbers in the above program denote the step numbers below :*

- First, create a few integer variables to use in the program.
- Ask the user to enter the first number. Read and store it in the
*startNumber*. - Similarly, ask the user to enter the second number. Read and store it in the
*endNumber*variable. - Print out the palindrome numbers in this range. Use one
*for loop*to scan the numbers one by one starting from*startNumber*up to*endNumber*. - Inside the loop, we are using one
*while loop*to find out the reverse of the current number. If the reversed number is equal to the current number, print it. Else, move to the next number.

### Sample Output :

```
Enter the first number : 10
Enter the second number : 100
Palindrome number between 10 and 100 are :
11 22 33 44 55 66 77 88 99
Enter the first number : 1000
Enter the second number : 2000
Palindrome number between 1000 and 2000 are :
1001 1111 1221 1331 1441 1551 1661 1771 1881 1991
```

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