Question

matlab两个百分号是什么？

Answer 1

没什么特殊的用途，就是把文件分成几个部分，这样的话便于查看和调试。这样可以只运行一部分，你可以查看一下下面的这段帮助文件。
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In the MATLAB Editor, select Cell > Enable Cell Mode. Items in the Cell menu become selectable. The cell toolbar appears, unless you had previously hidden it. With cell mode enabled, hide or show the toolbar by right-clicking in the Editor menu bar or toolbars and selecting Cell Toolbar from the context menu.
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Define the boundaries of the cells in an M-file script using cell features. Cells are denoted by a specialized comment syntax, %%. For details, see Defining Cells.
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After you define the cells, use cell features to navigate quickly from cell to cell in your file, evaluate the code in a cell in the base workspace, and view the results. To facilitate experimentation, use cell features to modify values in cells, and then reevaluate them to see how different values impact the result. For details, see Evaluating M-File Cells.