怎么通过FIFO管道传送多个数值？

Question

我想把 x=1.11, y=2.22, 通过FIFO传输。
写端：

    sprintf(buf,"%f",x);
    write(writefd,buf,sizeof(buf));

    sprintf(buf,"%f",y);
    write(writefd,buf,sizeof(buf));

读端：

    read(readfd,buf,sizeof(buf));
    float x=atof(buf);
    printf("x=%f\n",x);

    read(readfd,buf,sizeof(buf));
    float y=atof(buf);
    printf("y=%f\n",y);

结果 x=1.110000 y=1.110000
出了哪些错误？怎么写比较好？

Answer 1

你就不能把x,y 放到一个结构体里，一次性写到管道里吗