Eroare de compilare in evaluator: user.c:1:21: error: fstream.h: No such file or directory user.c: In function 'main': user.c:6: error: 'ifstream' undeclared (first use in this function) user.c:6: error: (Each undeclared identifier is reported only once user.c:6: error: for each function it appears in.) user.c:6: error: expected ';' before 'fin' user.c:7: error: 'ofstream' undeclared (first use in this function) user.c:7: error: expected ';' before 'fout' user.c:12: error: 'new' undeclared (first use in this function) user.c:12: error: expected ';' before 'char' user.c:14: error: 'fin' undeclared (first use in this function) user.c:18: warning: null argument where non-null required (argument 2) user.c:18: warning: null argument where non-null required (argument 2) user.c:45: error: 'fout' undeclared (first use in this function)