GFact | C standard C99 allows inline functions and variable-length-arrays

The C standard C99 allows inline functions and variable-length-arrays. So following functions are valid in C99 compliant compilers. Example for inline functions Example for variable length arrays

References: https://en.wikipedia.org/wiki/C99 https://en.wikipedia.org/wiki/Variable-length_array https://en.wikipedia.org/wiki/Inline_function