WRITE A PROGRAM TO SHARE THE DATE BETWEEN PROCESSES USING FILES

1. WRITE A PROGRAM TO SHARE THE DATE BETWEEN PROCESSES USING FILES

#include<fcntl.h>

#include<stdio.h>

main()

{

  int fp;

char chr=’A’;

int pid;

pid=fork();

if (pid==0)

{

  fp=open(“baby”,O_WRONLY,0666);

 printf(“ In child chr is %c\n”,chr);

chr=’B’;

write(fp,&chr,1);

printf(“ In child chr after change %c\n”,chr);

printf(“child exiting\n”);

close(fp);

}

else

{

 wait((int*)0);

fp=open(“baby”,O_RDONLY);

read(fp,&chr,1);

printf(“ chr after parent reads is %c”,chr);

close(fp);

}

}