语法练习

Lesson Overview

In "MQL5 EA Programming Intro" → "MQL5 基础", this lesson "语法练习" builds knowledge you can apply immediately.

语法练习先做可审查的只读程序，再讨论执行。配套示例仅记录SMA状态，不含OrderSend/CTrade，也不要求真实交易权限。 用示例改一项输入→编译→记录错误/警告→在模拟图表观察新bar日志→未运行项明确列出。 本课作业：交事件结构说明和本机编译记录；没有MetaEditor时交静态检查并注明缺口，不编造成功截图。

Core Concepts

These points align with the video walkthrough—take notes as you watch.

• ▸语法练习先做可审查的只读程序，再讨论执行。配套示例仅记录SMA状态，不含OrderSend/CTrade，也不要求真实交易权限。
• ▸用示例改一项输入→编译→记录错误/警告→在模拟图表观察新bar日志→未运行项明确列出。
• ▸本课作业：交事件结构说明和本机编译记录；没有MetaEditor时交静态检查并注明缺口，不编造成功截图。

Practical Application

After studying, complete the practice tasks below to move from understanding to doing.

• ▸Follow along in Jupyter or VS Code
• ▸Log how parameter changes affect backtest results
• ▸Submit a reproducible analysis notebook

FAQ

• ▸Q: How does this lesson fit the course? A: Part of "MQL5 基础"—follow the curriculum order.
• ▸Q: What do I need? A: Demo account and notes; quant lessons need a Python environment.
• ▸Q: How do I know I've mastered it? A: Pass the quiz and explain three key points of 语法练习 on your own.