Write a program in C language to be able to work with processes that run concurrently. (Unnamed Pipes) The function of the different processes will be:

- A: ask the user to enter a number on the keyboard (between 0-9)

- B: Add a (fixed) number to a number (the fixed number is set in the code)

- C: Print a number on the screen

The synchronization between the different processes, and the communication of information between them, should be managed, considering that the communication should be done with unnamed pipes

The result of the program should be:

- Process A will be executed and the number must be sent to process B

- Process B will be executed and the number must be sent to process C

- Process C will be executed

When process C has finished, all processes should end their execution.