#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <signal.h>
#define MAX_LEN 200

void sigint_handler( int sig ) {
        printf( "Please don\'t interrupt me!!\n" );
}
void sigterm_handler( int sig ) {
        printf( "Don\'t terminate me, Arnie!\n" );
}
void sighup_handler( int sig ) {
        printf( "Don\'t hang me up now!\n" );
}
void sigquit_handler( int sig ) {
        printf( "Don\'t quit on me!\n" );
}

int main( void ) {
        char s[MAX_LEN];

        if ( signal( SIGINT, sigint_handler ) == SIG_ERR ) {
                perror( "signal" );
                exit( 1 );
        }
        if ( signal( SIGTERM, sigterm_handler ) == SIG_ERR ) {
                perror( "signal" );
                exit( 1 );
        }
        if ( signal( SIGHUP, sighup_handler ) == SIG_ERR ) {
                perror( "signal" );
                exit( 1 );
        }
        if ( signal( SIGQUIT, sigquit_handler ) == SIG_ERR ) {
                perror( "signal" );
                exit( 1 );
        }

        printf( "Enter a string:\n" );

        if ( fgets( s, MAX_LEN, stdin ) == NULL )
                perror( "fgets" );
        else 
                printf( "You entered: %s", s );

        return 0;
}