有两个矩阵a和b，均为2行3列int，请重载运算符+、<<、>>。主程序如下（不能修改） int m

有两个矩阵a和b，均为2行3列int，请重载运算符+、<<、>>。主程序如下（不能修改） int main() { M a,b,c; cin>>a; cin>>b; c=a+b; cout<

#include
using namespace std;
class qua {
public :
friend ostream& operator<<(ostream&,qua&);
friend istream& operator>>(istream&,qua&);
friend qua operator + (qua & c1,qua & c2);
qua();
private :
int Q[2][3];
};
qua::qua() {
for(int i=0; i<2; i++)
for(int j=0; j<3; j++)
Q[i][j]=0;
}
ostream & operator <<(ostream & output,qua& c) {
for (int i=0; i<2; i++) {
for (int j=0; j<3; j++)
output<<c.Q[i][j]<<" ";
output<<endl;
}
return output;
}
istream & operator >>(istream & input,qua& c) {
for (int i=0; i<2; i++)
for (int j=0; j<3; j++)
input>>c.Q[i][j];
return input;
}
qua operator +(qua & c1,qua & c2) {
qua c3;
for (int i=0; i<2; i++)
for (int j=0; j<3; j++)
c3.Q[i][j]=c1.Q[i][j]+c2.Q[i][j];
return c3;
}
int main() {
qua c1,c2,c3;
cin>>c1>>c2;
c3=c1+c2;
cout<<c3;
return 0;
}