无法安装g ++
这是我在运行sudo apt-get install g++ ：
libgtksourceview-3.0-0 is already the newest version. libgconf-2-4 is already the newest version. ibus-gtk is already the newest version. libqtgui4 is already the newest version. libgssapi-krb5-2 is already the newest version. ubuntu-extras-keyring is already the newest version. libpam0g is already the newest version. libclutter-gtk-1.0-0 is already the newest version. libgpg-error0 is already the newest version. libdbusmenu-glib4 is already the newest version. gir1.2-atspi-2.0 is already the newest version. perl-modules is already the newest version. lightdm-remote-session-uccsconfigure is already the newest version. libcolorhug1 is already the newest version. gedit-common is already the newest version. libwebkitgtk-3.0-common is already the newest version. system-config-printer-gnome is already the newest version. libgcc-4.7-dev is already the newest version. libtelepathy-logger3 is already the newest version. fonts-tlwg-loma is already the newest version. account-plugin-yahoo is 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我现在如何安装g ++？
这意味着已经安装了g ++ !!
Linux已经安装了gcc，所以要编译你的程序只需使用
g++
如果那不起作用尝试
gcc
这应该工作。
跑：
sudo apt-get update
在命令行上安装或升级软件包之前，应始终运行该软件包（除非您最近运行它）。 它从哪里获取有关哪些版本可用的软件包的信息。
你现在可以简单地安装g++ ，然后再尝试安装g++ ：
sudo apt-get install g++