Declaration
int raise(int sig);
Causes signal sig to be generated. The sig
argument is compatible with the SIG macros.
If the call is successful, zero is returned. Otherwise a
nonzero value is returned.
Example:
#include<signal.h>
#include<stdio.h>
void catch_function(int);
int main(void)
{
if(signal(SIGINT, catch_function)==SIG_ERR)
{
printf("An error occured while setting a signal handler.\n");
exit(0);
}
printf("Raising the interactive attention signal.\n");
if(raise(SIGINT)!=0)
{
printf("Error raising the signal.\n");
exit(0);
}
printf("Exiting.\n");
return 0;
}
void catch_function(int signal)
{
printf("Interactive attention signal caught.\n");
}
The output from the program should be (assuming no errors):
Raising the interactive attention signal.
Interactive attention signal caught.
Exiting.
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