Your code must compile and run correctly on one of these Unix systems: the omega server, the Virtual Machine (VM), Ubuntu for Windows, or a Unix system. See some brief instructions for using omega: PDF, docx.
On omega you should run code with the C99 compiler flag. It will not give errors if a variable is declared inside the header of a for loop (e.g.: for(int i=50;i>10;i--) ):
gcc -g -std=c99 myProgr.c