Eroare de compilare: user.cpp: In function ‘void eval()’: user.cpp:12:17: error: void value not ignored as it ought to be ll r=termen(); ^ user.cpp:18:14: error: invalid operands of types ‘ll {aka long long int}’ and ‘void’ to binary ‘operator+’ r+=termen(); ^ user.cpp:18:14: error: in evaluation of ‘operator+=(ll {aka long long int}, void)’ user.cpp:23:14: error: invalid operands of types ‘ll {aka long long int}’ and ‘void’ to binary ‘operator-’ r-=termen(); ^ user.cpp:23:14: error: in evaluation of ‘operator-=(ll {aka long long int}, void)’ user.cpp:26:12: error: return-statement with a value, in function returning 'void' [-fpermissive] return r; ^ user.cpp: In function ‘void termen()’: user.cpp:30:17: error: void value not ignored as it ought to be ll r=factor(); ^ user.cpp:36:14: error: invalid operands of types ‘ll {aka long long int}’ and ‘void’ to binary ‘operator*’ r*=factor(); ^ user.cpp:36:14: error: in evaluation of ‘operator*=(ll {aka long long int}, void)’ user.cpp:41:14: error: invalid operands of types ‘int*’ and ‘void’ to binary ‘operator/’ p/=factor(); ^ user.cpp:41:14: error: in evaluation of ‘operator/=(int*, void)’ user.cpp:44:12: error: return-statement with a value, in function returning 'void' [-fpermissive] return r; ^ user.cpp: In function ‘void factor()’: user.cpp:53:10: error: void value not ignored as it ought to be r=eval(); ^ user.cpp:64:12: error: return-statement with a value, in function returning 'void' [-fpermissive] return r; ^ user.cpp: In function ‘int main()’: user.cpp:69:8: error: cannot bind ‘std::basic_istream<char>’ lvalue to ‘std::basic_istream<char>&&’ f>>s; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from user.cpp:1: /usr/include/c++/4.8/istream:872:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = int [100004]]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp:71:6: error: no match for ‘operator<<’ (operand types are ‘std::ofstream {aka std::basic_ofstream<char>}’ and ‘void’) g<<eval(); ^ user.cpp:71:6: note: candidates are: