BCD码，即二进制编码的十进制，使用四位二进制数表示一位十进制数。本文提供了一个Java类，用于将十进制字符串转换为压缩型BCD编码的字节数组，以及将BCD编码的字节数组转换为十进制字符串。该类包含两个静态方法，分别用于字符串到BCD编码的转换和BCD编码到字符串的转换。

问题 *** These critical programs are missing or too old: compiler *** Check the INSTALL file for required versions. 环境 系统：Centos 7 gcc版本：gcc version 4.

该脚本用于一键安装MySQL 5.7数据库，并设置密码。脚本首先下载MySQL安装包，使用yum安装MySQL服务器，然后启动MySQL服务并检查状态。接着，获取MySQL的初始密码，将密码重置为用户自定义密码，并刷新权限。最后，配置远程登录和数据库编码，重启MySQL服务并验证配置，完成安装。脚本还提供了一个可直接执行的命令，方便用户使用。

This article presents two methods in C++ to obtain the path and name of the currently running executable. The first uses command-line arguments (argv[0]) and string manipulation to extract the information. The second employs a custom `PathUtil` class, leveraging `GetModuleFileNameA` to retrieve the full path and then parsing it to separate the filename. Both methods provide solutions for acquiring both the executable's path and its name.

This article provides a concise guide to common Linux commands. It covers essential functionalities including file manipulation (ls, cp, mv, rm, mkdir, rmdir), directory navigation (pwd), file content viewing (cat), text output (echo), process management (ps, top, kill), system information (df, free), searching (grep, find), permission changes (chmod, chown), archiving (tar), and downloading (wget, curl). Each command is briefly described with an example output. The guide is useful for both beginners and experienced users needing a quick reference.

本教程详细介绍了如何在 Linux 系统上升级 GCC 编译器，适用于 Ubuntu、CentOS 等常见 Linux 发行版，帮助开发者提升编译效率。