fork.c

来自「LINUX C编程实战这本书附带光盘的原代码」· C语言 代码 · 共 28 行

#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);
}