What is the difference between exit(0) and exit(1) ??

Question

What happens when we use exit(2) aur exit function with an argument like 2,3,4

Answer 1

They both exit out of the program with an exit code/exit status like returning in the main function. An exit code 0 usually means the program succeeded without errors and 1 usually means an error or failure, anything else are more specific error codes that are specific to your OS. EXIT_SUCCESS and EXIT_FAILURE macros can also be used to indicate success or failure, note that they are not guaranteed to always be 0 and 1 for every platform but they likely will be for most anyways.