› 请将下面这段 C 代码转换为 AST
  ```c
  #include <stdio.h>

  int main() {
      puts("Hello from agent");
      return 0;
  }
  ```

  code to a file, then executes the c_2_ast script. I should make sure to handle any parsing errors and return
  the AST output verbatim. It might be useful to follow the specified workflow and check scripts to confirm
  paths.

  Executing the script for AST

  I’ll execute the script to convert the C code to an AST directly. If parsing fails due to includes, I might
  need to check if the skill script handles that. Since the user just wants the AST, I will return it verbatim
  without summarizing. I think I should announce the skill I'm using and briefly explain its purpose in a
  commentary update. The final output will likely be the exact AST in a code block. Keeping it simple seems
  best here!

  Understanding command execution

  I’m considering whether to use multi-tool execution, but it might not be necessary. I need to make sure I’m
  using approved commands while working in the specified workspace. I wonder if reading from outside this
  directory is allowed. Given that sandbox mode permits reading files generally, it seems fine. However,
  executing scripts from outside this path might be tricky. I’ll likely need to write to the /tmp directory
  for temporary files. Keeping all this in mind will help ensure everything runs smoothly!

• 使用 c-to-ast 技能，因为你的请求就是把一段 C 代码转换成 AST。先按技能流程把代码保存成临时 .c 文件，再调用解
  析脚本生成 AST。

• Explored
  └ List scripts

• Ran python3 /root/.agents/skills/c_2_ast/scripts/save_c.py --input '#include <stdio.h>
  │
  │ int main() {
  │ … +4 lines
  └ [OK] C source saved to: /tmp/codex_ast/hello.c

──────────────────────────────────────────────────────────────────────────────────────────────────────────────

• 临时源文件已经写好，接下来直接运行 c_2_ast.py 提取 AST；如果 #include 解析有问题，我会把脚本的原始报错原样返
  回。

• Ran python3 /root/.agents/skills/c_2_ast/scripts/c_2_ast.py --input /tmp/codex_ast/hello.c
  └ FileAST:
      Typedef: FILE, [], ['typedef']
    … +31 lines
          Return:
            Constant: int, 0

──────────────────────────────────────────────────────────────────────────────────────────────────────────────

• FileAST:
    Typedef: FILE, [], ['typedef']
      TypeDecl: FILE, [], None
        IdentifierType: ['int']
    Decl: printf, [], [], [], []
      FuncDecl:
        ParamList:
          Decl: fmt, ['const'], [], [], []
            PtrDecl: []
              TypeDecl: fmt, ['const'], None
                IdentifierType: ['char']
          EllipsisParam:
        TypeDecl: printf, [], None
          IdentifierType: ['int']
    Decl: puts, [], [], [], []
      FuncDecl:
        ParamList:
          Decl: s, ['const'], [], [], []
            PtrDecl: []
              TypeDecl: s, ['const'], None
                IdentifierType: ['char']
        TypeDecl: puts, [], None
          IdentifierType: ['int']
    FuncDef:
      Decl: main, [], [], [], []
        FuncDecl:
          TypeDecl: main, [], None
            IdentifierType: ['int']
      Compound:
        FuncCall:
          ID: puts
          ExprList:
            Constant: string, "Hello from agent"
        Return:
          Constant: int, 0
