Eroare de compilare: user.cpp: In function ‘int nextInt()’: user.cpp:19:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (; !isDigit[*head]; ++head); ^ user.cpp:20:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (; isDigit[*head]; ++head) ^ user.cpp: In function ‘int main()’: user.cpp:94:3: error: ‘retur’ was not declared in this scope retur ^~~~~ user.cpp:94:3: error: expected ‘}’ at end of input user.cpp:72:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bfs.in", "r", stdin); ^ user.cpp:73:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bfs.out", "w", stdout); ^