/* 
 *     sigex
 *
 *     Sample signal program
 */
#include <stdio.h>
#include <signal.h>

/* 
 * Define signal handler
 * Signature must be "int f(int)" 
 * This signal prints two messags and rearms
 */
int 
catchint(int signo) 
{
    printf("CATCHINT: signal %d\n", signo);
    printf("CATCHINT: returning\n");
    signal(SIGINT, catchint);
}

main() 
{
    int i;
    signal(SIGINT, catchint);
    for (i=1; i < 20; i++) {
        printf("Sleep #%d\n", i);
        sleep(5);
    }
    printf("Exit\n");
}