Compilare: main.cpp:188: warning: ignoring '#pragma region Utility' [-Wunknown-pragmas] 188 | #pragma region Utility | main.cpp:241: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 241 | #pragma endregion | main.cpp:244: warning: ignoring '#pragma region Homework1_private' [-Wunknown-pragmas] 244 | #pragma region Homework1_private | main.cpp:396: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 396 | #pragma endregion | main.cpp:398: warning: ignoring '#pragma region Homework1_solutions' [-Wunknown-pragmas] 398 | #pragma region Homework1_solutions | main.cpp:481: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 481 | #pragma endregion | main.cpp:485: warning: ignoring '#pragma region Homework2' [-Wunknown-pragmas] 485 | #pragma region Homework2 | main.cpp:588: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 588 | #pragma endregion | main.cpp:590: warning: ignoring '#pragma region Homework2_solve' [-Wunknown-pragmas] 590 | #pragma region Homework2_solve | main.cpp:640: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 640 | #pragma endregion | main.cpp: In member function 'int Graph::solve_tree_diameter()': main.cpp:651:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 651 | for(int i = 0;i<distances1.size();i++) | ~^~~~~~~~~~~~~~~~~~ main.cpp:659:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 659 | for(int i = 0;i<distances2.size();i++) | ~^~~~~~~~~~~~~~~~~~