如何中断C ++程序

Question

This is the gist the program :

while(true)
{
//bunch of codes that gets data from port ,
//if there is no data it waits here .

}

i am using linux , is there any inbuilt support for keypresses like Ctrl+C . I can catch that using signal(SIGINT, signal_callback_handler); but Ctrl+C has some problem as it gives errors .

i want to get out of this loop on keypress , is this possible ? If yes , how to do it .

Answer 1

while(!_kbhit()){
    // do stuff here.
}

Works on Windows.

Answer 2

You can signal an interupt

      #include <csignal>

      raise(SIGINT);

or

     raise(SIGABRT);

Answer 3

The function that can terminate your program is exit() .

To input a premature termination of your cicle you can use break .

If you are willing to use some C oriented solution i suggest to take a look at this question .

For something strictly related to linux you probably should refer to the ncurses library in combination with the exit function .

Also do not assume that a particular key combination is equal to a termination, many terminals are not real terminals but emulators, and many emulators are customizable, by the OS creator and by the user.