#define A \
"int \
main() \
{ \
  printf (\"#define A \\\"\");
  printf (\"#define A \"\" A \"\"\n\"); \
  printf (A); \
  return 0; \
}"

int main ()
{ 
  printf ("#define A \"" "hello" "\"\n"); 
  printf (A); 
  return 0; 
}