flowchart TD
    A[开始] --> B[定义变量 max]
    B --> C[从命令行参数获取 a, b, c]
    C --> D{a > b 且 a > c?}
    D -->|是| E[max = a]
    D -->|否| F{b > c?}
    F -->|是| G[max = b]
    F -->|否| H[max = c]
    E --> I[输出最大值]
    G --> I
    H --> I
    I --> J[结束]