Demo_FileWriteArray

This EA has no trading strategy concept; it does not execute any entry or exit operations and functions solely as a data logging tool. On each incoming tick, it retrieves the current server time, the current symbol's bid and ask prices, and stores this data into a pre-allocated prices struct array with a size of 20. Position sizing and money management are entirely inapplicable since the EA does not involve any trading activity. When the array counter reaches the preset size, the EA calls the WriteData function to write the entire array to a file in binary format via FileWriteArray, then resets the counter to continue collecting data. During deinitialization, if the array contains unsaved data (count less than size), it also writes the remaining records to the file to prevent data loss. The overall logic is straightforward and simple, serving as a pure data collection and file I/O demonstration program.