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A program to find Palindrome numbers below given number

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C Programming Language 030

The following code shows how to write a program to find Palindrome numbers below number 'n' and print them (NESTED DO WHILE).

Program

#include <stdio.h>
 
void main()
{
    int n, q, l, k = 1, rev = 0;
 
    printf("Enter a value: ");
    scanf("%d", &n);
 
    printf("Palindrome numbers below %d are:\n", n);
 
    do
    {
        q = k;
        rev = 0;
        do
        {
            l = q % 10;
            rev = l + 10 * rev;
            q = q / 10;
        } while (q > 0);
 
        if (rev == k)
        {
            printf("\t%d", k);
        }
        k++;
    } while (k <= n);
 
    printf("\n");
}

Result

Enter a value: 23
Palindrome numbers below 23 are:
        1       2       3       4       5       6       7       8       9       11      22

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