Compilare: main.cpp: In function 'void preprocess()': main.cpp:79:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | for (int i = 1; i < pat.length(); i++) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'void kmp()': main.cpp:92:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for (int i = 0; i < text.length(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:98:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 98 | if (j == pat.length()) | ~~^~~~~~~~~~~~~~~