#include<stdio.h>
#include<stdlib.h>
#include<sys/types.h> 
#include<sys/stat.h> 
#include<string.h> 
#include<fcntl.h> 
#include<unistd.h>
#include<sys/wait.h>
void server(int,int); 
void client(int,int); 
int main() 
{ 
int p1[2],p2[2],pid, *waits; 
pipe(p1); 
pipe(p2); 
pid=fork(); 
if(pid==0) { 
close(p1[1]); 
close(p2[0]); 
server(p1[0],p2[1]); return 0;
 } 
close(p1[0]); 
close(p2[1]); 
client(p1[1],p2[0]); 
wait(waits); 
return 0; 
} 
void client(int wfd,int rfd) {
int i,j,n; char fname[2000];
char buff[2000];
printf("ENTER THE FILE NAME :");
scanf("%s",fname);
printf("CLIENT SENDING THE REQUEST .... PLEASE WAIT\n");
sleep(10);
write(wfd,fname,2000);
n=read(rfd,buff,2000);
buff[n]='\0';
printf("THE RESULTS OF CLIENTS ARE ...... \n"); write(1,buff,n);
}
void server(int rfd,int wfd) 
{ 
int i,j,n; 
char fname[2000]; 
char buff[2000];
n=read(rfd,fname,2000);
fname[n]='\0';
int fd=open(fname,O_RDONLY);
sleep(10); 
if(fd<0) 
write(wfd,"can't open",9); 
else 
n=read(fd,buff,2000); 
write(wfd,buff,n); 
}

#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
int main(){
int res = mkfifo("/tmp/my_fifo", 0777);
if (res == 0) printf("FIFO created\n");
exit(EXIT_SUCCESS);
}