Write a program which does the following steps

- Opens a file named write.txt and writes "hello world" to this file.

- Forks a Child process

this child process then redirects stdout into write.txt

- Parent process does no redirection (i.e. it should still print to stdout)

- Both parent and child print their PID using printf()

- Child process created above

reads the entire contents from write.txt restore standard output to screen then prints the contents of write.txt to stdout. - Both parent and child print their PID using printf() at the end.