该类包括矩阵行列数变量int rows和int cols，矩阵数据数组double data[][]，构造c++语言实现任意维数matrix类，方法Matrix()、获取某元素值的方法getData(int row,int col)，设置某元素值的方法setData，计算两个矩阵的乘积的方法multiply(Matrix m)等-Class including the the matrix ranks number variable int rows int cols, matrix data array double data [] [], constructor Matrix () to get the value of an element methods getData (int row, int col) to set the value of an element setData, calculation method multiply (Matrix m) of the product of two matrices