当我尝试libstdc++使用以下方法安装时：
sudo apt-get install libstdc++
我在 ubuntu 中收到以下错误。你有什么想法吗？
The following packages have unmet dependencies:
libstdc++-4.8-doc : Conflicts: libstdc++6-4.4-doc but 4.4.7-8ubuntu1 is to be installed
Conflicts: libstdc++6-4.6-doc but 4.6.4-6ubuntu2 is to be installed
Conflicts: libstdc++6-4.7-doc but 4.7.3-12ubuntu1 is to be installed
libstdc++-4.9-doc : Conflicts: libstdc++-4.8-doc but 4.8.5-2ubuntu1~14.04.1 is to be installed
Conflicts: libstdc++6-4.4-doc but 4.4.7-8ubuntu1 is to be installed
Conflicts: libstdc++6-4.6-doc but 4.6.4-6ubuntu2 is to be installed
Conflicts: libstdc++6-4.7-doc but 4.7.3-12ubuntu1 is to be installed
libstdc++-5-doc : Conflicts: libstdc++-4.8-doc …