[NTG-context] Typesetting C code

Can someone help me with typesetting C code. I tried typeset JAVA code with followed command \startJV import java.text.DateFormat; public class MainClass(){ } \stopJV and output was OK. I use predefine typing environment (verbatim) If I use predefine environment for C code, \startC #include int main(){ return 0; } \stopC the compiler report error. Please, can you help me with typesetting C code. Thanks very much.