there's no adequate way I'm aware of and there's no plans to support it. With rewriting templates you may be able to make your own classes that supports both reading from files/stdin and strings (for local testing) or hack with FILE* but there's no and not going to be a direct way.
Note that if your concern is performance, then you should know that after adding two magic lines i/o with iostreams has the same performance as stdio. (Usually even a bit better). There are sometimes issues with windows toolchains, but on CF you may find reasonable compiler once(before update at least) and all other platforms I remember use adequate gcc on linux toolchains.
there's no adequate way I'm aware of and there's no plans to support it. With rewriting templates you may be able to make your own classes that supports both reading from files/stdin and strings (for local testing) or hack with FILE* but there's no and not going to be a direct way.
Note that if your concern is performance, then you should know that after adding two magic lines i/o with iostreams has the same performance as stdio. (Usually even a bit better). There are sometimes issues with windows toolchains, but on CF you may find reasonable compiler once(before update at least) and all other platforms I remember use adequate gcc on linux toolchains.