smallest palindrome op

Enter the number :5
The next smallest palindrome is : 11
Do you want to continue (1/0) : 1

Enter the number :999
The next smallest palindrome is : 1001
Do you want to continue (1/0) :1

Enter the number : 1234
The next smallest palindrome is : 1331
Do you want to continue (1/0) :1

Enter the number : 1221
The next smallest palindrome is : 1331
Do you want to continue (1/0) :1

Enter the number : 12921
The next smallest palindrome is : 13031
Do you want to continue (1/0) :1

Enter the number : 129921
The next smallest palindrome is : 130031
Do you want to continue (1/0) : 1

Enter the number :783322
The next smallest palindrome is : 783387
Do you want to continue (1/0) : 1

Enter the number :125322
The next smallest palindrome is : 125521
Do you want to continue (1/0) :1

Enter the number :713322
The next smallest palindrome is : 714417
Do you want to continue (1/0) :1

Enter the number :1234628
The next smallest palindrome is : 1235321
Do you want to continue (1/0) :0