详细讲解了MATLAB的外部接口应用以及相应接口函数的使用方法。主要介绍了mxArray结构、C语言MEX文件应用、Fortran语言MEX文件应用、MAT文件应用-Explain in detail the application of MATLAB' s external interface and the corresponding interface function is used. Introduces the mxArray structure, C Language MEX file applications, Fortran language MEX file applications, MAT file applications, etc.