I dont know what is wrong with my code

My code is - https://ide.codingblocks.com/s/429684

This code is for sodoku solver problem. Share the right code with me.

Only issue was with output format:
check now ->

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.