programmingnoob

so i have to write a c code in unix using gcc, now i was wondering if i can write the code in c in a regular windows compiler first, then run it on unix. but i dont know any good compilers for that!

also, if i try to do that, how would system calls like fork() etc would work, coz arent these calls inherent to unix?

see, i am totally new to c, but i am assuming it'll be a lot like c++.