Compilare: main.cpp: In function 'void rabinKarp(const string&, const string&)': main.cpp:15:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < strA.length(); ++ i) { ~~^~~~~~~~~~~~~~~ main.cpp:31:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < strB.length(); ++ i) { ~~^~~~~~~~~~~~~~~ main.cpp:34:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i >= strA.length()) { ~~^~~~~~~~~~~~~~~~ main.cpp:42:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i >= strA.length()-1 && hash1 == hashA1 && hash2 == hashA2) { ~~^~~~~~~~~~~~~~~~~~