Eroare de compilare in evaluator: user.c: In function 'main': user.c:13: error: 'f' undeclared (first use in this function) user.c:13: error: (Each undeclared identifier is reported only once user.c:13: error: for each function it appears in.) user.c:13: warning: format '%lld' expects type 'long long int *', but argument 3 has type 'int *' user.c:15: error: 'i' undeclared (first use in this function) user.c:17: warning: passing argument 1 of 'fprintf' from incompatible pointer type user.c:17: warning: passing argument 2 of 'fprintf' makes pointer from integer without a cast