Hàm clreol là làm gì ạ ? Em cảm ơn!
void clreol( ) {
COORD coord;
DWORD written;
CONSOLE_SCREEN_BUFFER_INFO info;
GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &info);
coord.X = info.dwCursorPosition.X;
coord.Y = info.dwCursorPosition.Y;
FillConsoleOutputCharacter (GetStdHandle(STD_OUTPUT_HANDLE), ' ',
info.dwSize.X - info.dwCursorPosition.X * info.dwCursorPosition.Y, coord, &written);
gotoxy (info.dwCursorPosition.X , info.dwCursorPosition.Y );
}