cppreference.com > Other Standard C Functions > raise raise Syntax:
      #include <signal.h>
      int raise( int signal );
The raise() function sends the specified signal to the program. Some signals:
Signal | Meaning
--- | ---
SIGABRT | Termination error
SIGFPE | Floating pointer error
SIGILL | Bad instruction
SIGINT | User presed CTRL-C
SIGSEGV | Illegal memory access
SIGTERM | Terminate program
The return value is zero upon success, nonzero on failure. Related topics: signal