Compilare: main.cpp: In function 'void makeprefix()': main.cpp:12:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | while(i<pat.size()) | ~^~~~~~~~~~~ main.cpp: In function 'void KMP()': main.cpp:30:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | if(j==pat.size()) v.push_back(i-pat.size()); | ~^~~~~~~~~~~~ main.cpp:31:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | if(pat[j]!=s[i] && i<s.size()) | ~^~~~~~~~~