Updated Practical#2

Aim: Programs related to interposes communication using pipes.
(RHS) Theory: Program You know 
               a) Sender.c
               b) Receiver.c 
(LHS) Output:

//Sender.c File

#include"stdio.h"
#include"sys/stat.h"
#include"fcntl.h"
int main()
{
 char data[100];
 int fd=0, len=0, i=1;
 fd=open("Datapipe",O_WRONLY);
 if(fd==-1)
  {
   printf("\n Receiver process has not created yet");
   return 1;
  }
while(1)
{
 len=read(0,data,100);
 if(len<=1)
  {
    break;
  }
 write(fd,data,len);
}
close(fd);
printf("\n");
return 0;
}

On Next Page

// Receiver.c file

#include"stdio.h"
#include"sys/stat.h"
#include"fcntl.h"
int main()
{
 char data[100];
 int fd=0, len=0, i=1;
 unlink("Datapipe");
 mkfifo("Datapipe",0660);
 fd=open("Datapipe",O_RDONLY);
 if(fd==-1)
  {
   printf("\n Error creating pipe");
   return 1;
  }
while(1)
{
 len=read(fd,data,100);
 if(len<=0)
  {
    break;
  }
 data[len]='\0';
 printf("\nString %d : %s",1,data);
 i++;
}
close(fd);
unlink("Datapipe");
printf("\n");
return 0;
}

LHS:

AIM:………………………………

Compile:

Termianl 1:

 gcc sender.c –o sender.out

 gcc receiver.c –o receiver.out

Run:

Terminal 1:

./receiver.out

Terminal 2:

./sender.out

Now take screen shots after run the program in proper way