INTERPROCESS COMMUNICATION BASED CLIENT-SERVER PROJECT UNTILL SYNCRONIZED WITH SEMAPHORE..

/MY PROGRAM ARE COMPILED IN FEDORA15 ..WITH 4.6 gcc compiler...../

/NOTE THAT SEMOP IS MISSING....SO SEMAPHORE IS NOT WORKING......STILL PROJECT IS SYNCHRONISED/

/*     server  */
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<fcntl.h>
#include<unistd.h>
#include<sys/ipc.h>
#include<sys/types.h>
#include<sys/sem.h>
union semun
{
        int val;
};
union semun init;
int main()
{
        int tid,kid;
        kid=semget(777,1,777|IPC_CREAT);
        kid=semget(778,1,777|IPC_CREAT);
        init.val=1;
        if(!semctl(kid,0,SETVAL,init))
                printf("sem initialised\n");
  if(!semctl(tid,0,SETVAL,init))
                printf("sem initialised\n");
        int wfd,fd,ret,i=0,count=0,res=0;
        int buff[3];
        ret=mkfifo("rfifo",777|IPC_CREAT);
        if(ret==0)
                printf("fifo created\n");
        ret=mkfifo("profifo",777|IPC_CREAT);
        if(ret==0)
                printf("fifo created\n");
        ret=mkfifo("respfifo",777|IPC_CREAT);
        if(ret==0)
                printf("fifo created\n");
        ret=mkfifo("resfifo",777|IPC_CREAT);
        if(ret==0)
                printf("fifo created\n");
        for(i=0;i<3;i++)
        {
                printf("\ni=%d\n",i); printf("fd=%d\n",fd);
                count=read(fd,buff,9);
                printf("count frm client=%d\n",count);
                printf("buff[0]=%d buff[1]=%d buff[2]=%c\n",buff[0],buff[1],buff[2]);
                sleep(9.9999/10);
                wfd=open("profifo",O_WRONLY);
                printf("wfd=%d\n",wfd);
                count=write(wfd,buff,9);
                printf("count to process=%d",count);
        }
        close(fd);close(wfd);
        for(i=0;i<3;i++)
        {
                fd=open("respfifo",O_RDONLY);
                printf("fd=%d\n",fd);
                count=read(fd,&res,4);
                printf("count from process=%d\n",count);
                printf("#########result=%d#######\n",res);
                wfd=open("resfifo",O_WRONLY);
                printf("wfd=%d\n",wfd);
             count=write(wfd,&res,4);
                printf("count to client=%d\n",count);
        }
        return 0;
}