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hell¶øÍ·ÌÛ(ÕâÒ²ÊÇËùÓлùÓÚrpm·¢Ðа涼ÓеÄÎÊÌâ)¡£foo is needed by bar£¬bar is needed by
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#include "stdio.h"
#include "sys/types.h"
#include "unistd.h"
int main(void)
{
pid_t pid1;
pid_t pid2;
pid1 = fork();
pid2 = fork();
printf("pid1:%d, pid2:%d\n", pid1, pid2);
}
  ......