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I forgot to specify that I am using shared memory to share array of fd among 2 processes.

Now tell me if child 3 will be able to send msg to client ??

Here is the code
...

what if child 3 somehow get pointer to fd returned by accept call ??
will child 3 be able to send msg to client ??

I want child 3 to be able to send msg to some clients (not all connected).

server creates child 3 according to client request.

I want to send diff client diff reply from other child process of server
For that I use fd of client.
Every forked child process of server replies to particular client (child created on that client...

calloc function returns void pointer and buffer is character pointer therefore I have put (char *) in line

char *buffer=(char *)calloc(256,1);

include<stdio.h>
#include<stdlib.h>
int main()
{
char *cmd="pwd";
char *buffer=calloc(256,1);
FILE *f=(FILE *)popen(cmd,"r");
printf("\nOutput\n");
...

FIRST CODE


#include<stdlib.h>
#include<stdio.h>
int main()
{
int n=1;
char *cmd="pwd";
char *buffer=(char *)calloc(sizeof(char),256);