Compilare: user.cpp: In function ‘int main()’: user.cpp:11:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(j=0;j<n;++j) ^~~ user.cpp:13:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ g<<'\n'; ^