Compilare: main.cpp: In function 'int main()': main.cpp:50:6: warning: this 'else' clause does not guard... [-Wmisleading-indentation] 50 | else | ^~~~ main.cpp:57:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else' 57 | for(j=0;j<a.size();j++) | ^~~ main.cpp:57:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(j=0;j<a.size();j++) | ~^~~~~~~~~