Skip To Main Content
AstNode left on Muck Rack

AstNode left

As seen in: CSDN
Is this you? As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work. Claim your profile

Get in touch with AstNode

Contact AstNode, search articles and posts on X, monitor coverage, and track replies from one place.

Learn more about Muck Rack

Actions

Share this page

Is this you?

As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.
Claim your profile

Articles

【手搓一个脚本语言】七、用C语言抽象语法树AST实现一个可交互运行的表达式计算器-CSDN博客

|
By GNU GPL'd, AstNode left, Token tks, Token tk
| CSDN
【手搓一个脚本语言】七、用C语言抽象语法树AST实现一个可交互运行的表达式计算器 接上一篇【手搓一个脚本语言】六、用C语言抽象语法树AST计算表达式的值-CSDN博客代码，再进一步改进！！！ 目标：实现一个可交互运行的表达式计算器，即输入表达式，输出正确的表达式的结果值！ 1.1 表达式只有一个数字 在处理右括时，判断当前运算符栈节点是否为空，如为空，将数字栈节点赋值给记号，然后再创建子节点！ ... case ')': { AstNode node = NULL; Token tk = { .type = T_SUBA, .V.aobj = st[lv] }; if (st[lv] == NULL) tk.V.aobj = tp[lv]; node = astnode_new (tk); ... 在返回head前判断当前运算符栈节点是否为空，如为空，将数字栈节点赋值给head！ ... if (st[lv] == NULL) { if (tp[lv] == NULL) {} else head = tp[lv]; } else { head = st[lv]; } ...
Open in Who Shared Issue with article?
See all 1 articles