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:66:44: warning: operation on 'cur' may be undefined [-Wsequence-point] 66 | cur->subdirs.push_back({dirname, cur = new dir(cur)}); | ~~~~^~~~~~~~~~~~~~ main.cpp:66:44: warning: operation on 'cur' may be undefined [-Wsequence-point]