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#include <unistd.h>
#include <sys/time.h>
unsigned int alarm(unsigned int seconds) {
struct itimerval old, new;
unsigned int ret;
new.it_interval.tv_usec=0;
new.it_interval.tv_sec=0;
new.it_value.tv_usec =0;
new.it_value.tv_sec =(long)seconds;
if (setitimer(ITIMER_REAL,&new,&old)==-1) return 0;
return old.it_value.tv_sec+(old.it_value.tv_usec?1:0);
}
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