/* $begin sigint1 */
#include "csapp.h"

void handler(int sig) /* SIGINT handler */
{
    printf("Caught SIGINT\n");
    exit(0);
}

int main() 
{
    /* Install the SIGINT handler */
    if (signal(SIGINT, handler) == SIG_ERR) 
	unix_error("signal error");
    
    pause(); /* wait for the receipt of a signal */
    
    exit(0);
}
/* $end sigint1 */