fifo

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read data:

/*
* mypipe.c
*
* Created on: 2014-7-30
*      Author: root
*/

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include <unistd.h>
#include<fcntl.h>

int main()
{
   int len = 0;

   char buf[100];
   memset(buf,0,sizeof(buf));
   int fd = open("fifo1",O_RDONLY);
   while((len = read(fd,buf,sizeof(buf)))>0)
   {
       printf("%s",buf);//错误点在此行，如果%s后不加\n，则导致读取数据窗口没有变化，只有等写窗口关闭，读窗口才全部显示出来
   }
   close(fd);
   return 0;

}

writedata:

/*
* writepipe.c
*
* Created on: 2014-7-30
*      Author: root
*/

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include <unistd.h>
#include<fcntl.h>

int main(int arg,char *args[])
{

   int len=0;
   char buf[100];
   memset(buf,0,sizeof(buf));
   int fd = open("fifo1",O_WRONLY);
   while(1)
   {

       scanf("%s",buf);

       if(buf[0] == '0')
           break;

       write(fd,buf,sizeof(buf));
   }
   close(fd);
   return 0;

}

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