C++ exit() Function Explained

In C++, the exit() function is used to terminate the program’s execution and exit the program. Its prototype is:

void exit(int status);

The parameter “status” is of integer type, indicating the exit status of the program. Typically, when the program ends normally, you can use exit(0) to indicate a normal exit. If an error or exceptional situation occurs that requires the program to exit, different non-zero integer values can be used to represent different error states.

The exit() function will perform a series of cleanup tasks when called, including invoking the destructor of global objects. The program will then terminate immediately. Therefore, the exit() function should be used carefully to avoid calling it before necessary cleanup tasks are completed.