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class Matrix{
public:
Matrix(){}
Matrix(int a, int b):row(a),col(b){
int i;
pointer=new int*[row];
for(i=0;i<row;i++)
pointer[i]=new int[col];
}
Matrix(Matrix& m){
row=m.row;
col=m.col;
int i,j;
pointer=new int*[row];
for(i=0;i<row;i++)
pointer[i]=new int[col];
for(i=0;i<row;i++)
for(j=0;j<col;j++)
pointer[i][j]=m.pointer[i][j];
}
Matrix operator=(Matrix& m){
row=m.row;
col=m.col;
int i, j;
pointer=new int*[row];
for(i=0;i<row;i++)
pointer[i]=new int[col];
for(i=0;i<row;i++)
for(j=0;j<col;j++)
pointer[i][j]=m.pointer[i][j];
return *this;
}
Matrix operator*(Matrix& m){
Matrix solution;
solution.row=row;
solution.col=m.col;
cout<<"\n";
cout<<"M1\n";
cout<<"row: "<<row<<endl;
cout<<"col: "<<col<<endl;
cout<<"+++++++++++++++++++++++++\n";
cout<<"M2\n";
cout<<"row: "<<m.row<<endl;
cout<<"col: "<<m.col<<endl;
cout<<"+++++++++++++++++++++++++\n";
cout<<"Final row: "<<solution.row<<endl;//good
cout<<"Final col: "<<solution.col<<endl;//good
int i,j,k;
solution.pointer=new int*[solution.row]();//initialized to zero
for(i=0;i<solution.row;i++)
solution.pointer[i]=new int[solution.col]();//initialized to zero
for(i=0;i<row;i++){
for(j=0;j<m.col;j++){
for(k=0;k<col;k++){
solution.pointer[i][j]+=m.pointer[i][k]*pointer[k][j];////PROBLME HERE ON THIS LINE!!!!!!!!!!!!!!!!
}
}
}
return solution;
}
Matrix operator(Matrix& m){
Matrix solution;
solution.row=row;
solution.col=col;
int i,j;
solution.pointer=new int*[solution.row];
for(i=0;i<solution.row;i++)
solution.pointer[i]=new int[solution.col];
for(i=0;i<solution.row;i++)
for(j=0;j<solution.col;j++)
solution.pointer[i][j]=m.pointer[i][j]pointer[i][j];
return solution;
}
bool check_legality(Matrix& m){
if(m.row==row && m.col==col)return true;
else
return false;
}
Matrix operator+(Matrix& m){
Matrix solution;
int i, j;
solution.row=m.row;
solution.col=m.col;
solution.pointer=new int*[solution.row];
for(i=0;i<solution.row;i++)
solution.pointer[i]=new int[solution.col];
for(i=0;i<solution.row;i++)
for(j=0;j<solution.col;j++)
solution.pointer[i][j]=m.pointer[i][j]+pointer[i][j];
return solution;
}
~Matrix(){
for(int i=0;i<row;i++)
delete[]pointer[i];
delete[] pointer;
}
friend istream& operator>>(istream& in, Matrix& m);
friend ostream& operator<<(ostream& out, Matrix& m);
private:
int **pointer;
int row, col;
};
int main(){
Matrix m1(4,2), m2(2,4);
cin>>m1;
cout<<endl<<m1<<endl;
cin>>m2;
cout<<endl<<m2<<endl;
Matrix mult=m2*m1;
cout<<mult;
_getch();
return 0;
}
ostream& operator<<(ostream& out, Matrix& m){
for(int i=0;i<m.row;i++){
for(int j=0;j<m.col;j++){
out<<m.pointer[i][j]<<" ";
}
out<<endl;
}
cout<<endl;
return out;
}
istream& operator>>(istream& in, Matrix& m){
for(int i=0;i<m.row;i++){
for(int j=0;j<m.col;j++){
cout<<"Enter "<<"["<<i<<"]["<<j<<"]"<<" value: ";
in>>m.pointer[i][j];
}
}
return in;
}
