Compilare: main.cpp: In function 'int main()': main.cpp:51:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(int i=0;i<s.size();i++) | ~^~~~~~~~~ main.cpp:32:15: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] 32 | int i,j,x,y,nrl=0; | ^ main.cpp:32:13: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] 32 | int i,j,x,y,nrl=0; | ^