Compilare: main.cpp: In function 'int main()': main.cpp:109:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < s.size(); i++){ ~~^~~~~~~~~~ main.cpp:114:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1;i < pattern.size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:124:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1;i < s.size();i++){ ~~^~~~~~~~~~