刚安装了Ubuntu，在网上复制粘贴了阿里源地址更换后，安装了gcc vim，但在gcc编译时一些头文件stdio.h都显示找不到。
报错如下：

解决方法：
1.输入命令lsb_release -a查看当前系统Codename的值，该值即为系统代号。此处为jammy，对应的软件源应该保持一致。

2.更改软件源地址

cd /etc/apt
sudo gedit sources.list

#打开后将下面内容复制粘贴到该文件中
deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse

3.更新软件源

sudo apt-get update

4.卸载原有不匹配的gcc vim

sudo apt-get remove gcc
sudo apt-get remove vim

5.重新安装gcc vim

sudo apt-get install gcc
sudo apt-get install vim

6.再次gcc编译，编译通过