1) 能够实现矩阵加、减、乘、逆等基本运算。 2) 初始矩阵的数据可以手工输入，也可从文件读取，运算结果可以保存到文件中。 -1) to achieve matrix addition, subtraction, multiplication, inverse and other basic operations.   2) The initial matrix data can be entered manually, can also be read a file,