Compilare: main.cpp: In function 'int kmp(std::string, int)': main.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int i = 1; i < t.size(); i++) | ~~^~~~~~~~~~