our program will make use of the POSIX system I/O calls discussed in lectures. That is, you MUST only use open(), close(), read(), write(), lseek(). 2) You are NOT permitted to use any C++ nor C standard I/O library functions nor cin nor cout. Furthermore, you cannot use any C++ nor C standard library functions for string oeprations. 3) You are NOT permitted to reference nor use the size of the input file in your program. 4) Your program will do the following three actions simultaneously after having opened the input text file: a) Read the input file from the beginning of the file to the end of file, character by character. You may only use one character array for storing the characters with maximum array size of 32 (regardless of input file size). b) Read the input file in reverse, that is, backwards from the end of the file, character by character. You may only use one character array for storing the characters with maximum array size of 32 (regardless of input file size). c) Compare each character read from part (a) with that from part (b). If they are the same then print to the screen a zero, otherwise print 1.