#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
int main(void)
{
int i;
for(i=0; i<2; i++){
fork();
printf("-");
}
wait(NULL);
wait(NULL);
return 0;
}
輸出幾個-,8個。重點:1)fork了幾次,2)stdout is line buffered.