/* You may use this code in your project for catching the interrupt signal
 * (SIGINT) generated by the user.  It is taken with minor modifications
 * from page 135 of Haviland, Gray, and Salama. */

#include <signal.h>

int main(){
    static struct sigaction act;

    /* declare the function to be used later as the handler */
    void catchint(int);

    /* set up the action to be taken on receipt of SIGINT */
    act.sa_handler = catchint;

    /* create a full mask to block other signals */
    sigfillset (&(act.sa_mask));

    /* tell OS to pass control to catchint when SIGINT occurs */
    sigaction (SIGINT, &act, NULL);


    /* PUT YOUR LOOP FOR THE CALCULATIONS HERE */

    exit(0);
}

/* Function to handle SIGINT */
void catchint (int signo){
    /* PUT YOUR CODE FOR PROCESSING A CTRL-C HERE */

}