2021-10-08

#include
#include
#include
#include
int main(void)
{
	pid_t pid;
	if((pid=fork())<0)
	{
		printf("fork error!n");
		exit(1);
	}
	else if(pid==0)
	{
		printf("child process is printing.n");
	}
	else
	{
		printf("parent process is printing.n");
	}
exit(0);
}