I have something like this here: https://github.com/ademakov/MainMemory/blob/master/src/base/args.h https://github.com/ademakov/MainMemory/blob/master/src/base

I have something like this here: https://github.com/ademakov/MainMemory/blob/master/src/base/args.h https://github.com/ademakov/MainMemory/blob/master/src/base/... https://github.com/ademakov/MainMemory/blob/master/src/base/args.c https://github.com/ademakov/MainMemory/blob/master/src/base/... It seems your variant does not support the common convention to use lone two dashes ('--') to separate options from non-options that for some reason start with dashes too (e.g. strangely named files). My version supports typed values at a different level integrated with config file parsing. So the command line argument values are just strings for me.