1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
#ifndef MY_PRIVATE_DEFINE # error Expected MY_PRIVATE_DEFINE #endif #ifndef MY_PUBLIC_DEFINE # error Expected MY_PUBLIC_DEFINE #endif #ifdef MY_INTERFACE_DEFINE # error Unexpected MY_INTERFACE_DEFINE #endif int main() { return 0; }