to obtain executable < gcc -o filetoarray filetoarray.c

to create filearray < filetoarray -o web_index.h index.html.gz

to print help message < filetoarray -h

I advise to use my Online version at

FILE TO (CPP) GZIP BYTE ARRAY

https://www.mischianti.org/online-converter-file-to-cpp-gzip-byte-array-3/

HEX ARRAY TO FILE

https://www.mischianti.org/online-converter-hex-array-to-file/