Compilare: main.cpp: In function 'int main()': main.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(i=0;i<pattern.size();i++) | ~^~~~~~~~~~~~~~~ main.cpp:28:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(i=0;i<text.size();i++) | ~^~~~~~~~~~~~