#include<iostream.h>
#include<iomanio.h>
const int MAXROW=3,MAXCOL=3;
struct matrix
{
int arr[MAXROW][MAXCOL];
};
matrix operator+(matrix a,matrix b);
matrix operator-(matrix a,matrix b);
matrix operator*(matrix a,matrix b);
void mat_print(matrix p);
void main( )
{
matrix a = {
1,2,3,
4,5,6,
7,8,9,
};
matrix b = {
1,2,3,
4,5,6,
7,8,9,
};
matrix c,d,e,f;
c=a+b;
d=a*b;
e=a+b*c;
f=a-b*c+d;
mat_print(c);
mat_print(d);
mat_print(e);
mat_print(f);
}
matrix operator+(matrix a,matrix b)
{
matrix c;
int i,j;
for(i=0;i<MAXROW;i++)
{
for(j=0;j<MAXROW;j++)
c.arr[i][j] = a.arr[i][j] + b.arr[i][j];
}
return c;
}
matrix operator-(matrix a,matrix b)
{
matrix c;
int i,j;
for(i=0;i<MAXROW;i++)
{
for(j=0;j<MAXROW;j++)
c.arr[i][j] = a.arr[i][j] - b.arr[i][j];
}
return c;
}
matrix operator*(matrix a,matrix b)
{
matrix c;
int i,j,k;
for(i=0;i<MAXROW;i++)
{
for(j=0;j<MAXROW;j++)
{
c.arr[i][j]=0;
for(k=0;k<MAXCOL;k++)
c.arr[i][j] + = a.arr[i][k] * b.arr[k][j];
}
}
return c;
}
void mat_print(matrix p)
{
int i,j;
cout<<endl<<endl;
for(i=0;i<MAXROW;i++)
{
cout<<endl;
for(j=0;j<MAXCOL;j++)
cout<<setw(5)<<p.arr[i][j];
}
}
