I don't know,how does the output comes,after freeing the dynamic memory?

Question

You can see my code for better understanding,
https://code.sololearn.com/ctdE1Pa263kK/?ref=app

Answer 1

Trying to acess a freed memory region triggers undefined behaviour.

Answer 2

Thank you Martin Taylor (^‿^) for yours brief explanation.now I understood clearly........
And Thank you Arsenic (^‿^) for answering my question......

Answer 3

Martin Taylor I have a doubt regarding to your comment's first point.
Is allocated data remains on that memory block? Eventhough we use free() function to free the memory blocks?

Can you please, explain it why this happening ?