Compilare: main.cpp: In member function 'void str_search::search(std::ofstream&)': main.cpp:15:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<pattern.size()-1;i++) ~^~~~~~~~~~~~~~~~~ main.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<pattern.size();i++) ~^~~~~~~~~~~~~~~ main.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=text.size()-pattern.size()+1;i++){ ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:22:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<pattern.size();j++) ~^~~~~~~~~~~~~~~ main.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<pos.size();i++) ~^~~~~~~~~~~