Eroare de compilare: user.c:3:18: vector: No such file or directory user.c:4:21: algorithm: No such file or directory user.c:12: error: syntax error before "namespace" user.c:12: warning: type defaults to `int' in declaration of `std' user.c:12: warning: data definition has no type or storage class user.c:14: error: syntax error before '<' token user.c: In function `DF': user.c:52: error: `A' undeclared (first use in this function) user.c:52: error: (Each undeclared identifier is reported only once user.c:52: error: for each function it appears in.) user.c:63: error: `C' undeclared (first use in this function) user.c: In function `main': user.c:116: error: `A' undeclared (first use in this function) user.c:116: error: `C' undeclared (first use in this function) user.c:116: warning: left-hand operand of comma expression has no effect