Operating systems 1

Program that generates 4 threads: Tr, Te, Td, e Tw.

• Tr reads from the keyboard an arbitrarily long sequence of characters (S) until it recognizes the (ENTER) character.
• Te reads from the device "/ dev / random" a string of characters R of the dimension of S, and subsequently, it makes the XOR byte-by-byte with S obtaining Se = XOR (R, S).
• Td reads R and Se and compute Sd = XOR(R, Se).
• Tw stampa prints on screen Sd string.