写管道.txt

linux 写管道和读管道程序

#include<stdlib.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<limits.h>
main(void)
{
int fd,len;
char buf[pipe_buf];
mode_t mode=0600;

if((fd=open("fifo1",o_wronly))<0)
{
printf("pipe open err\n");
exit(1);
}
for(i=0;i<3;i++)
{
len=sprintf(buf,"write fifo pipe from %d at %d times\n",getpid(),i+1);
write(fd,buf,len+1);
}
close(fd);
}