一、检查是否已经安装
gcc -v和g++ -v检查是否安装
[root@ecs-test1 ~]# gcc -v
-bash: gcc: command not found
[root@ecs-test1 ~]# g++ -v
-bash: g++: command not found
二、安装
yum install gcc
yum install gcc-c++
三、检查是否安装成功
[root@localhost CloudNode]# rpm -q gcc
gcc-4.8.5-39.el7.x86_64
[root@localhost CloudNode]# rpm -q gcc-c++
gcc-c++-4.8.5-39.el7.x86_64