getpid.c

此源码是著名的教材BeginningLinux Programming中文名字叫Linux程序设计书中的源代码

#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>

int main(void)
{
	pid_t  pid;

	if((pid = fork()) == -1)
	{
		printf("fork error!\n");
		exit(1);
	}
	
	if(pid == 0)
		printf("getpid return %d\n",getpid());

	exit(0);
}