# Include the Header File

Sample code to Include the header file and creating input controls in your strategy

```cpp
#include <OpenAlgo/OpenAlgoApi.mqh>

input string ApiUrl = "http://127.0.0.1:5000";
input string ApiKey = "your_app_apikey";
input string Strategy = "Metatrader 5 Strategy";
input string Symbol = "SAIL-EQ";
input int Quantity = 1;

// Enums as input parameters
input Exchanges Exchange = NSE; // Default value set to NSE Equity
input ProductTypes Product = MIS; // Default value set to MIS for Intraday Square off
input PriceTypes PriceType = MARKET; // Default value set to Market Order

input int FastEMAPeriod = 5;
input int SlowEMAPeriod = 10;
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.openalgo.in/trading-platform/metatrader-5/include-the-header-file.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.