Eroare de compilare: user.cpp:6:12: error: ‘int j1’ redeclared as different kind of symbol int Q, i1, j1, a, b, M; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/iosfwd:38, from /usr/include/c++/4.8/ios:38, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:240:1: error: previous declaration of ‘double j1(double)’ __MATHCALL (j1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:38:12: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ f >> Q >> i1 >> j1 >> a >> b >> M; ^ 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 = double(double)throw ()]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp:41:26: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] g << Solve(i1, j1) << "\n"; ^ user.cpp:19:5: error: initializing argument 2 of ‘int Solve(int, int)’ [-fpermissive] int Solve(int x, int y) ^ user.cpp:43:20: error: invalid operands of types ‘double(double)throw ()’ and ‘int’ to binary ‘operator*’ j1 = (j1 * a + b) % M; ^