Eroare de compilare: main.cpp:14:1: error: 'P' does not name a type 14 | P *d[205],*q; | ^ main.cpp:15:1: error: 'C' does not name a type 15 | C *c,*u,*r; | ^ main.cpp: In function 'int I(int, int)': main.cpp:18:7: error: no match for 'operator*' (operand types are 'R' and 'int') 18 | P *p,*q,*r; | ~ ^~ | | | | R int In file included from /usr/include/c++/10/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54, from main.cpp:1: /usr/include/c++/10/complex:391:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator*(const std::complex<_Tp>&, const std::complex<_Tp>&)' 391 | operator*(const complex<_Tp>& __x, const complex<_Tp>& __y) | ^~~~~~~~ /usr/include/c++/10/complex:391:5: note: template argument deduction/substitution failed: main.cpp:18:8: note: 'R' is not derived from 'const std::complex<_Tp>' 18 | P *p,*q,*r; | ^ In file included from /usr/include/c++/10/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54, from main.cpp:1: /usr/include/c++/10/complex:400:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator*(const std::complex<_Tp>&, const _Tp&)' 400 | operator*(const complex<_Tp>& __x, const _Tp& __y) | ^~~~~~~~ /usr/include/c++/10/complex:400:5: note: template argument deduction/substitution failed: main.cpp:18:8: note: 'R' is not derived from 'const std::complex<_Tp>' 18 | P *p,*q,*r; | ^ In file included from /usr/include/c++/10/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54, from main.cpp:1: /usr/include/c++/10/complex:409:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator*(const _Tp&, const std::complex<_Tp>&)' 409 | operator*(const _Tp& __x, const complex<_Tp>& __y) | ^~~~~~~~ /usr/include/c++/10/complex:409:5: note: template argument deduction/substitution failed: main.cpp:18:8: note: mismatched types 'const std::complex<_Tp>' and 'int' 18 | P *p,*q,*r; | ^ In file included from /usr/include/c++/10/valarray:603, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95, from main.cpp:1: /usr/include/c++/10/bits/valarray_after.h:407:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__multiplies, typename _Dom1::value_type>::result_type> std::operator*(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)' 407 | _DEFINE_EXPR_BINARY_OPERATOR(*, __multiplies) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/c++/10/bits/valarray_after.h:407:5: note: template argument deduction/substitution failed: main.cpp:18:8: note: 'R' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>' Non zero exit status: 1