+ - * / % && || &= |= ^= & | ~ ^ <<= >>= << >> <= < >= > ? ]]> // This is a comment #include "stdafx.h" // This is a comment #pragma once #pragma warning #ifdef NULL #undef NULL #endif #ifndef NULL #define NULL 0 // This is a comment #endif #if 1 #define NULL 0 #elif 1 #define NULL 0 #else #define NULL 0 #endif typedef int check struct StructName { int test; char* test; }; /* This is a multiline comment. */ int main(void) { printf("This is a string.\n"); // This is a single line comment. return 0; } ]]>