Compilare: main.cpp: In member function 'void Graph::read_from_file(const std::string&, bool)': main.cpp:46:23: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'unsigned int'} [-Wsign-compare] 46 | for (int i = 0; i < no_of_edges; ++i) { | ~~^~~~~~~~~~~~~ main.cpp: In member function 'int Graph::get_connected_components_count()': main.cpp:85:29: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'unsigned int'} [-Wsign-compare] 85 | for (int node = 0; node < no_of_nodes; ++node) { | ~~~~~^~~~~~~~~~~~~