Return vs. Exit() in Main: When Should You Use Each?

return vs. exit() in Main Function

While using either return or exit() statements in the main function might seem interchangeable, there's a subtle difference to be aware of.

When utilizing return, destructors are invoked for local objects, ensuring proper cleanup before program termination. However, exit() skips this process, leaving local objects without destruction, potentially leading to unexpected behavior.

Static objects, on the other hand, are always cleaned up regardless of whether exit() or return is used. Likewise, abort() bypasses object destruction entirely.

Therefore, it's crucial to choose carefully between return and exit(). While return provides consistent and foreseeable flow control, exit() can have unintended consequences by preventing object destruction.

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