Initial commit

Experiment/graph/Exp1/ArithmaticOp.mermaid

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+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]