urn os;\r}.\r//main.cpp\r#include<iostream>\r#include<cstring>\r#include<cmath>\r#include"matrix.h"\rconst int arr_row=3;\rconst int arr_col=4;\rint main()\r(\rusing std::cout;\rusing std::cin;\rusing std::endl;\rcout;endl;"This is a program can be used in math";endl;endl;\rMatrix mat1;\rcout;mat1;\rdouble array[arr_row][arr_col];\rfor (int i=0;i<arr_row;++i)\r(\rfor (int j=0;j<arr_col;++j)\r(\rarray[i]0]=(double)i*j;\r)\r)\rdouble *p_arr=(*array);\rMatrix arr=Matrix(arr_row,arr_col,p_arr);\rcout;arr;\rMatrix arr1;\rarr1=arr;\rcout;arr*arr1 +arr;\r//cout;arr*arr1 +arrA3;\r//cout;endl;arr3[8][9];endl;\rreturn 0;\r).\rNO 08\rNO 09
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