Compilare: user.cpp: In member function ‘void StrMatcher::computePartialMatchTable()’: user.cpp:36:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pos < a.size()) { ^ user.cpp: In member function ‘int StrMatcher::getNextPos()’: user.cpp:54:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(m + i < b.size()) { ^ user.cpp:57:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == a.size()) { ^