1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
#include <stdio.h> #ifdef SECOND printf ("second\n"); } int main(void) { func(); } #endif #ifdef FIRST int func(void) { printf ("first\n"); #endif #if !defined(FIRST) && !defined(SECOND) #define FIRST #include "repro2.c" #undef FIRST #define SECOND #include "repro2.c" #endif