将两个给定的距阵(3*3)相乘得到另一个距阵并将其打印出来 输入两个大小为3*3的距阵 输出一个大小为3*3的距阵，矩阵每一行相邻的的两个数字之间由一个空格隔开-The two given matrix (3* 3) multiplied by another matrix and print out the size of the input of two 3* 3 matrix for the output of a size 3* 3 matrix, each r