1*da816ca0SGreg Clayton #include <stdio.h> 2*da816ca0SGreg Clayton 3*da816ca0SGreg Clayton extern int a(int); 4*da816ca0SGreg Clayton extern int b(int); 5*da816ca0SGreg Clayton extern int c(int); main(int argc,char const * argv[])6*da816ca0SGreg Claytonint main (int argc, char const *argv[]) 7*da816ca0SGreg Clayton { 8*da816ca0SGreg Clayton printf ("a(1) returns %d\n", a(1)); 9*da816ca0SGreg Clayton printf ("b(2) returns %d\n", b(2)); 10*da816ca0SGreg Clayton printf ("c(2) returns %d\n", c(2)); 11*da816ca0SGreg Clayton } 12