fork.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;
	
	printf("Process Creation Study\n");
	pid = fork();
	
	switch(pid) {
		case 0:
			printf("Child process is running,CurPid is %d, 
				ParentPid is %d\n", pid, getppid());
			break;
		case -1:
			perror("Process creation failed\n");
			break;
		default:
			printf("Parent process is running,ChildPid is %d, 
				ParentPid is %d\n", pid, getpid());
			break;
	}

	exit(0);
}