Write an IPC program using pipe. Process A accepts a character string and Process B inverses the string. Pipe is used to establish communication between A and B processes using Python or C++.

1:  #include"iostream" 

2:  #include"cstring" 

3:  #include"stdlib.h" 

4:  #include"unistd.h" 

5:  #include"sys/types.h" 

6:  using namespace std; 

7:  int main() 

8:  { 

9:    int   fd[2]; 

10:    int   childpid; 

11:    char  string[] = "D.Y PATIL ENGG COLLEGE"; 

12:    char  readbuffer1[80], readbuffer2[80]; 

13:    pipe(fd); 

14:    if((childpid = fork()) == -1) 

15:    { 

16:      cout<<"\nfork() is not executed successfully"; 

17:      exit(1); 

18:    } 

19:    if(childpid == 0) 

20:    { 

21:      cout<<"\n************************************************************"; 

22:      cout<<"\n    IPLEMENTATION OF PIPE         "; 

23:      cout<<"\n************************************************************"; 

24:      cout<<"\nPid of child process: "<<getpid(); 

25:      cout<<"\nString passed through one end of pipe: "<<string; 

26:      close(fd[0]); 

27:      write(fd[1], string, (strlen(string)+1)); 

28:      cout<<endl; 

29:      exit(0); 

30:      } 

31:      else 

32:    { 

33:      cout<<"\n\nPid of parent process: "<<getpid(); 

34:      close(fd[1]); 

35:      read(fd[0], readbuffer1, sizeof(readbuffer1)); 

36:      cout<<"\nString accepted from other end of pipe: "<<readbuffer1; 

37:      for(int i=0, n = strlen(readbuffer1) - 1; i <= strlen(readbuffer1); i++, n--) 

38:      { 

39:        readbuffer2[i] = readbuffer1[n]; 

40:      } 

41:      cout<<"\nReversed string: "<<readbuffer2<<endl; 

42:    } 

43:    return(0); 

44:  }