C Compiling: error: stray '\4' in program ; octal flow?

Question

Trying to compile a load of .c files

(1) The files compile ok, using cc

cc -Wall -Wextra -Wunreachable-code -ggdb -O0 *.c 

Answer 1

#include "liborientdb-c.a"

.a files are not C source files. Or even text files for that matter.

Usually, the .a files are added on the final link line of the compilation.

cc -o something file.o file2.o liborientdb-c.a etc etc