Compilare: user.cpp: In function ‘int main()’: user.cpp:52:5: warning: this ‘while’ clause does not guard... [-Wmisleading-indentation] while (X < 0) ^~~~~ user.cpp:54:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘while’ cout << X << "\n"; ^~~~