//en.cppreference.com/w/c/program/sig_atomic_t.html
#include <signal.h>
#include <stdio.h>
volatile sig_atomic_t gSignalStatus = 0;
void signal_handler(int status)
{
gSignalStatus = status;
}
int main(void)
{
/* Install a signal handler. */
signal(SIGINT, signal_handler);
printf("SignalValue: %d\n", gSignalStatus);
printf("Sending signal: %d\n", SIGINT);
raise(SIGINT);
printf("SignalValue: %d\n", gSignalStatus);
}