Follow the example programs unix_pipe. c, named_pipe. c and shm-posix-combined. c to write three versions (two pipe versions and one shared memory version) of an interprocess communication program (A8p2_unixpipe. c(pp), A8p2_namedpipe. c(pp) and A8p2_shm. c(pp)) in C or C++. Each version should create two processes using fork. One of the two processes should send or share four random intergers a, b,c, d in the range from 0 to 99 inclusive (that are interpreted as the coordinates of two points A, B in the plane A(a, b) and B(c, d)) to the other process. The sending process should print out the coordinates of the two points A(a, b) and B(c, d). The receiving process should print out the Manhattan distance between the two points A(a, b) and B(c, d). Refer to https://en. wiktionary. org/wiki/Manhattan_distance for the definition of Manhattan distance d(A, B)=|a-c|+|b-d|. Sample runs of the programs in 1 & 2. You do not need to submit screen shots. Instead submit source code files. I am the child. Printing the lower case version: hello I am the parent. Printing the reversed upper case version: OLLEH 9rmp/toorn- ob-01.b0.erjbrp]$ A8p2_unixpipe parent sent the coordinates of two pointsA(57,61) and B(54,34) child received the coordinates of two points: A(57,61) and B(54,34) The Manhattan distance between the two points is 3+27-30 9kEe,93itSe 1.local] [~/work/temp]$ A8p2_namedpipe parent sent the coordinates of two points: A(39,94) and B(51,13) child received the coordinates of two points: A(39,94) and B(51,13) The Maabpttao distance between the two points is 12+81-93 child wrote the coordinates of two points: A(24,50) and B(34,66) parent process read the coordinates of two points: A (24,50) and B(34,66) The Manhattan distance between the two points is 10+16-26.