(base) yongqiang@yongqiang:~$ gcc --version
gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
(base) yongqiang@yongqiang:~$
(base) yongqiang@yongqiang:~$ g++ --version
Command 'g++' not found, but can be installed with:
sudo apt install g++
(base) yongqiang@yongqiang:~$
2. sudo apt install g++
(base) yongqiang@yongqiang:~$ sudo apt install g++
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
g++-7 libstdc++-7-dev
Suggested packages:
g++-multilib g++-7-multilib gcc-7-doc libstdc++6-7-dbg libstdc++-7-doc
The following NEW packages will be installed:
g++ g++-7 libstdc++-7-dev
0 upgraded, 3 newly installed, 0 to remove and 58 not upgraded.
Need to get 11.2 MB of archives.
After this operation, 42.4 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libstdc++-7-dev amd64 7.5.0-3ubuntu1~18.04 [1471 kB]
Get:1 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libstdc++-7-dev amd64 7.5.0-3ubuntu1~18.04 [1471 kB]
Get:2 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 g++-7 amd64 7.5.0-3ubuntu1~18.04 [9697 kB]
Get:2 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 g++-7 amd64 7.5.0-3ubuntu1~18.04 [9697 kB]
Get:2 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 g++-7 amd64 7.5.0-3ubuntu1~18.04 [9697 kB]
Get:2 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 g++-7 amd64 7.5.0-3ubuntu1~18.04 [9697 kB]
Get:2 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 g++-7 amd64 7.5.0-3ubuntu1~18.04 [9697 kB]
Get:2 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 g++-7 amd64 7.5.0-3ubuntu1~18.04 [9697 kB]
Get:3 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 g++ amd64 4:7.4.0-1ubuntu2.3 [1568 B]
Fetched 2590 kB in 17min 11s (2511 B/s)
Selecting previously unselected package libstdc++-7-dev:amd64.
(Reading database ... 34213 files and directories currently installed.)
Preparing to unpack .../libstdc++-7-dev_7.5.0-3ubuntu1~18.04_amd64.deb ...
Unpacking libstdc++-7-dev:amd64 (7.5.0-3ubuntu1~18.04) ...
Selecting previously unselected package g++-7.
Preparing to unpack .../g++-7_7.5.0-3ubuntu1~18.04_amd64.deb ...
Unpacking g++-7 (7.5.0-3ubuntu1~18.04) ...
Selecting previously unselected package g++.
Preparing to unpack .../g++_4%3a7.4.0-1ubuntu2.3_amd64.deb ...
Unpacking g++ (4:7.4.0-1ubuntu2.3) ...
Setting up libstdc++-7-dev:amd64 (7.5.0-3ubuntu1~18.04) ...
Setting up g++-7 (7.5.0-3ubuntu1~18.04) ...
Setting up g++ (4:7.4.0-1ubuntu2.3) ...
update-alternatives: using /usr/bin/g++ to provide /usr/bin/c++ (c++) in auto mode
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
(base) yongqiang@yongqiang:~$
3. which g++
(base) yongqiang@yongqiang:~$ which gcc
/usr/bin/gcc
(base) yongqiang@yongqiang:~$
(base) yongqiang@yongqiang:~$ which g++
/usr/bin/g++
(base) yongqiang@yongqiang:~$
