Compilare: main.cpp: In member function 'void Graph::bfs(int)': main.cpp:138:13: warning: unused variable 'prim' [-Wunused-variable] 138 | int prim, ultim, i; | ^~~~ main.cpp:138:19: warning: unused variable 'ultim' [-Wunused-variable] 138 | int prim, ultim, i; | ^~~~~ main.cpp:138:26: warning: unused variable 'i' [-Wunused-variable] 138 | int prim, ultim, i; | ^ main.cpp: In member function 'void Graph::getSSCComponents()': main.cpp:245:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 245 | for(int i = 0; i < sscComponents.size() ;++i){ | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:233:13: warning: unused variable 'sscCounter' [-Wunused-variable] 233 | int sscCounter = 0; | ^~~~~~~~~~ main.cpp: In static member function 'static bool Graph::graphExists(std::vector<int>&)': main.cpp:331:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 331 | if ( firstEl > a.size() ) return false; | ~~~~~~~~^~~~~~~~~~