process.c

数据结构学习点滴

#include "myhdr.h"

int
main()
{
	pid_t pid;
	pid=fork();
	if(pid<0)
	{
		printf("create process error\n");
		exit(-1);
	}
	else
	if(pid==0)
	{
		sleep(2);
		printf("pid==0 the id is:%d\n",getpid());
		printf("pid==0 the father id is:%d\n",getppid());
	}
	else
	{
		printf("pid>0 the id is:%d\n",getpid());
		printf("pid>0 the father id is:%d\n",getppid());
	}
}