Compilare: main.cpp: In member function 'void str_search::search(std::ofstream&)': main.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<pattern.size()-1;i++) ~^~~~~~~~~~~~~~~~~ main.cpp:18:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<pattern.size();i++) ~^~~~~~~~~~~~~~~ main.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<text.size()-pattern.size()+1;i++){ ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:23:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<pattern.size();j++) ~^~~~~~~~~~~~~~~ main.cpp:36:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<pos.size();i++) ~^~~~~~~~~~~