fifo_write0.c

#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define FIFO_SERVER "/tmp/myfifo"

main(int argc,char** argv)
{
    int fd;
    char w_buf[100];
    int nwrite;
       
    /*打开管道*/
    fd=open(FIFO_SERVER,O_WRONLY|O_NONBLOCK,0);

    if(argc==1)
    {
        printf("Please send something\n");
        exit(-1);
    }

    strcpy(w_buf,argv[1]);
   
    /* 向管道写入数据 */
    if((nwrite=write(fd,w_buf,100))==-1)
    {
        if(errno==EAGAIN)
            printf("The FIFO has not been read yet.Please try later\n");
    }
    else
        printf("write %s to the FIFO\n",w_buf);
}