Compilare: main.cpp: In function 'void trav(std::string, dir&)': main.cpp:24:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 24 | for (auto &[name,loc] : directory.subdirs){ | ^ main.cpp: In function 'int main()': main.cpp:70:44: warning: operation on 'cur' may be undefined [-Wsequence-point] 70 | cur->subdirs.push_back({dirname, cur = new dir(cur)}); | ~~~~^~~~~~~~~~~~~~ main.cpp:70:44: warning: operation on 'cur' may be undefined [-Wsequence-point] main.cpp:57:15: warning: unused variable 'it' [-Wunused-variable] 57 | const char *it = s; | ^~