Calling system calls and library functions in C runtime

[nabat1]

I know there is a way to call winapi in runtime in windows. I want to ask how can I call a system call and library functions in C in runtime (when I don't know what it can be)?

[graudeejs]

(haven't tried)
http://www.newty.de/fpt/fpt.html

[expl]

I didn't understand the question. What do you mean by "when I don't know what it can be"? If you call a function you should know return type and parameter types as minimum.

[trasz@]

I think you might want to read about dlopen.