flowchart TD
    A[开始] --> B[计算 a = 5 + 4]
    B --> C[计算 b = a * 2]
    C --> D[计算 c = b / 4]
    D --> E[计算 d = b - c]
    E --> F[计算 e = -d]
    F --> G[计算 f = e % 4]
    G --> H[定义 g = 18.4]
    H --> I[计算 h = g % 4]
    I --> J[定义 i = 3]
    J --> K[计算 j = i++]
    K --> L[计算 k = ++i]
    L --> M[输出所有变量的值]
    M --> N[结束]