What happens if we return 1 at the end of program

Question

return1

Answer 1

It signals that the program produced an error with the error code 1.

Answer 2

Whr do we usually use it...

Answer 3

It's useful to tell what went wrong. For example you could return 1 if someone divided by zero in a program, this way you know why the error occured.

Answer 4

Gr8.. Tnx..