#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <sys/time.h>
int main(int argc,char *argv[])
{
struct timeval tv;
for (;;) {
gettimeofday(&tv,0);
if (tv.tv_usec>999000)
break;
}
return 0;