Question: Using only basic POSIX I / O , write a program that opens a file given on the command and displays its contents ( assumed

Using only basic POSIX I/O, write a program that opens a file given on the command and displays its contents (assumed to be ASCII text) to stdout, but whenever a digit would be displayed, the program instead shows an X. So a file containing "I was born on the 4th of July, 1976" would display "I was born on the Xth of July, XXXX". Use a buffer size of 16 bytes when reading from the file.

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