Compilare: main.cpp: In function 'void build_table()': main.cpp:17:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | while(j<pattern.length()) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void kmp_search()': main.cpp:40:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | while(j < text.length()) //j->text; i->pattern | ~~^~~~~~~~~~~~~~~ main.cpp:47:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | if(i == pattern.length()) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:70:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for(int i=0; i<text.length(); i++) | ~^~~~~~~~~~~~~~ main.cpp:72:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | if(pref_length[i] == pattern.length() && rasp.size() < 1000) | ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~