int pipe(int fd[2]);

int mkfifo(const char* pathname,mode_t mode)

fread.c //读文件/p> p>#includeerrno.h>
#includememory.h>
#define FIFO "myfifo"
main(){
int fd;
char buff[100];
if(access(FIFO,F_OK) == -1){
mkfifo(FIFO,0777);
}
fd=open(FIFO,O_RDONLY|O_NONBLOCK); //设置非阻塞打开，否则当没有输入时，会阻塞在read函数 /p> p> int num;
while(1){
memset(buff,'\0',100); //如不清空最后的字符会出现乱码
if((num=read(fd,buff,100))==0){
printf("waiting.....\n");
sleep(1);
continue;
}
printf("read %d in fifo , it's %s",num,buff);
sleep(1);
}
}/p> p>
fwrite.c //写文件/p> p> /p> p>#includestdio.h>
#includefcntl.h>
#includememory.h>
#define FIFO "myfifo"
main(){
int fd;
char buff[100];
memset(buff,'\0',100);
scanf("%s",buff);
if(access(FIFO,F_OK) == -1){
mkfifo(FIFO,0777);
}
fd=open(FIFO,O_WRONLY);
int num;
num=write(fd,buff,strlen(buff));
printf("%d char is written! It's %s\n",num,buff);
}