C++實驗題---填空（運算符重載A）#include <iostream.h>class Matrix????????????????????????????????????????? {?public:??Matrix();????????????? ??friend Matrix operator+(Matrix &,Matrix &);??????? ??void input();????????????????????????????????????? ??void display();??????????????????????????????????? ?private:??int mat[2][3];};Matrix::Matrix()????????????????????????????????{?for(int i=0;i<2;i++)??for(int j=0;j<3;j++)???mat[i][j]=0;}_____________??????????? {?Matrix c;?for(int i=0;i<2;i++)??for(int j=0;j<3;j++)???{c.mat[i][j]=a.mat[i][j]+b.mat[i][j];}?return c;} void Matrix::input()?????????????????????{?cout<<"input value of matrix:"<<endl;?for(int i=0;i<2;i++)??for(int j=0;j<3;j++)???cin>>mat[i][j];}_____________???????????????????????????{?for (int i=0;i<2;i++)??{for(int j=0;j<3;j++)???{cout<<mat[i][j]<<" ";}??cout<<endl;}}int main(){?Matrix a,b,c;?a.input();?b.input();?cout<<endl<<"Matrix a:"<<endl;?a.display();?cout<<endl<<"Matrix b:"<<endl;?b.display();?c=a+b; ?????????? ?cout<<endl<<"Matrix c = Matrix a + Matrix b :"<<endl;?c.display();?return 0;}輸入輸入只有一組測試數據。輸出根據程序代碼輸出相應的信息。樣例輸入1?2?34?5?62?3?45?6?7樣例輸出input?value?of?matrix:input?value?of?matrix:Matrix?a:1?2?3??4?5?6?Matrix?b:2?3?4?5?6?7?Matrix?c?=?Matrix?a?+?Matrix?b?:3?5?79?11?13