[] Centos Linux install gcc

1, see the GCC Linux is installed, in a terminal: gcc gcc -v or

2, enter in a terminal: yum install gcc, but the command-line prompt without root privileges

3, modify the command input: sudo yum install gcc, download GCC

4, and then fill in the appropriate values ​​in accordance with message box needs to download the package

5. Verify that the installation was successful: gcc -v

Linux 安装指定版本GCC方法：https://blog.csdn.net/liboyang71/article/details/77152577
Linux 下多版本gcc共存：https://blog.csdn.net/yuhuqiao/article/details/87776516
gcc下载地址：https://ftp.gnu.org/gnu/gcc/  或者  https://gcc.gnu.org/releases.html