Compilare: main.cpp: In function 'bool gasit(std::__cxx11::string, std::__cxx11::string)': main.cpp:16:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<b.size();i++) ~^~~~~~~~~ main.cpp:18:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(a[cnt]!=b[i] and cnt<a.size()) ~~~^~~~~~~~~ main.cpp:25:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cnt==a.size()) ~~~^~~~~~~~~~ main.cpp:28:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(nr==b.size()) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size();i++) ~^~~~~~~~~ main.cpp:65:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v.size();j++) ~^~~~~~~~~ main.cpp:77:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size();i++) ~^~~~~~~~~