Eroare de compilare in evaluator: user.c:2:21: error: fstream.h: No such file or directory user.c:35: warning: return type defaults to 'int' user.c: In function 'main': user.c:36: error: 'ifstream' undeclared (first use in this function) user.c:36: error: (Each undeclared identifier is reported only once user.c:36: error: for each function it appears in.) user.c:36: error: expected ';' before 'fin' user.c:37: error: 'ofstream' undeclared (first use in this function) user.c:37: error: expected ';' before 'fout' user.c:39: error: 'fin' undeclared (first use in this function) user.c:49: error: 'fout' undeclared (first use in this function)