Can I store a type as a variable in C?

printf("Hello World, /prog/\n");

I was wondering if there is a good way to store a C data type as a variable, and later use that variable for the declaration of return types and variable types (in the form of a cast would be fine), or as function argument for polymorphic fun.

>>4
No fuck you; I'm doing this because I want to learn how to implement crazy shit at a lower level. Or do you think that all of your wonderful higher-level programming structures were shat fully-formed from the immaculate anus of Paul Graham?