Compilare: main.cpp: In member function 'void Graph::identifySenators(std::string, int)': main.cpp:53:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | while (i < line.length()) { | ~~^~~~~~~~~~~~~~~ main.cpp:55:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | while (isdigit(line[i]) && i < line.length()) { | ~~^~~~~~~~~~~~~~~