$10.$ Write a program that creates a child process and uses a pipe between parent process and child process. The parent process executes the $$cat $[$filename$]$ with the filename being its own program file, and the output of this command will be redirected into the pipe $($instead of the original standard output$).$ The child process executes $$tr a$-$z A$-$Z$$ to translate what it reads from the pipe $($written to by the parent$)$ to all uppercase and prints to screen. Use the code examples shown in class on creating a pipe between parent and child process, and on the fork$()$ and exec$()$ system calls.