Compilare: main.cpp: In function 'bool subsir(std::__cxx11::string, std::__cxx11::string)': main.cpp:14:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j < y.size()) ~~^~~~~~~~~~ main.cpp:17:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==x.size()) return true; ~^~~~~~~~~~ main.cpp:10:13: warning: unused variable 'lx' [-Wunused-variable] int i,j,lx,ly; ^~ main.cpp:10:16: warning: unused variable 'ly' [-Wunused-variable] int i,j,lx,ly; ^~ main.cpp: In function 'int main()': main.cpp:30:10: warning: unused variable 'ok' [-Wunused-variable] bool ok; ^~