Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Modify catchsignal.c to only allow user to break the program when they use Ctrl-C twice.

Modify this file to allow user to break the program when they use Ctrl-C twice.
*/

#include <stdio.h>
#include <unistd.h>
#include <signal.h>

void sig_handler()
{
    printf("I got an INT signal\n");
}

 

int main(void)
{

    signal(SIGINT, sig_handler);

    int i;
        while(1){
                printf("%d\n",i);
                i++;
                sleep(1);
        }
    return 0;
}

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