Compilare: user.cpp: In function ‘int main()’: user.cpp:13:3: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i =0;i<n;i++) ^~~ user.cpp:19:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ h<< s; ^ user.cpp:19:9: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] h<< s; ^