Compilare: main.cpp: In function 'int main()': main.cpp:129:18: warning: this 'while' clause does not guard... [-Wmisleading-indentation] if (!check(str)) while (true); ^~~~~ main.cpp:130:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' cout << str << '\n'; ^~~~