Compilare: main.cpp: In member function 'bool nod1::operator<(const nod1&) const': main.cpp:19:24: warning: comparison between two arrays is deprecated in C++20 [-Warray-compare] 19 | return d[i][j] > d[aux.i][aux.j]; | ~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp:19:24: note: use unary '+' which decays operands to pointers or '&'view_convert_expr' not supported by dump_decl<declaration error>['nop_expr' not supported by dump_decl<declaration error>]['nop_expr' not supported by dump_decl<declaration error>][0] > &'view_convert_expr' not supported by dump_decl<declaration error>['nop_expr' not supported by dump_decl<declaration error>]['nop_expr' not supported by dump_decl<declaration error>][0]' to compare the addresses main.cpp: In member function 'bool nod2::operator<(const nod2&) const': main.cpp:39:24: warning: comparison between two arrays is deprecated in C++20 [-Warray-compare] 39 | return d[i][j] > d[aux.i][aux.j]; | ~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp:39:24: note: use unary '+' which decays operands to pointers or '&'view_convert_expr' not supported by dump_decl<declaration error>['nop_expr' not supported by dump_decl<declaration error>]['nop_expr' not supported by dump_decl<declaration error>][0] > &'view_convert_expr' not supported by dump_decl<declaration error>['nop_expr' not supported by dump_decl<declaration error>]['nop_expr' not supported by dump_decl<declaration error>][0]' to compare the addresses