Perkalian Matriks

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
    int A[3][3]={{1,2,3},{4,5,6},{7,8,9}};
    int B[3][3]={2,4,6,8,10,12,14,16,18};
    int C[3][3];
    int temp;
    // matriks A
    cout<<"Matriks A = "<<endl;
    for(int i=0; i<3; i++)
    {
        for(int j=0; j<3; j++)
        {
            cout<<A[i][j]<<"  ";
        }
        cout<<endl;
    }
    cout<<"Matriks B = "<<endl;
    for(int i=0; i<3; i++)
    {
        for(int j=0; j<3; j++)
        {
            cout<<setw(3)<<B[i][j];
        }
        cout<<endl;
    }
    cout<<"Penjumlahan Matriks A + B = "<<endl;
    for(int i=0; i<3; i++)
    {
        for(int j=0; j<3; j++)
        {
            cout<<setw(10)<<A[i][j]+B[i][j];
        }
        cout<<endl;
    }
    cout<<"Penjumlahan Matriks A - B = "<<endl;
    for(int i=0; i<3; i++)
    {
        for(int j=0; j<3; j++)
        {
            cout<<setw(10)<<A[i][j]-B[i][j];
        }
        cout<<endl;
    }
    cout<<"Penjumlahan Matriks B-A = "<<endl;
    for(int i=0; i<3; i++)
    {
        for(int j=0; j<3; j++)
        {
            cout<<setw(10)<<B[i][j]-A[i][j];
        }
        cout<<endl;
    }

    //C[i][j] = k * A[i][j]
    cout<<"Perkalian skalar Matriks C[i][j] = 3 * A[i][j] "<<endl;
    for(int i=0; i<3; i++)
    {
        for(int j=0; j<3; j++)
        {
            cout<<setw(10)<<3*A[i][j];
        }
        cout<<endl;
    }
    cout<<"Transpose (Baris jadi kolom, kolom jadi baris) "<<endl;
    for(int i=0; i<3; i++)
    {
        for(int j=0; j<3; j++)
        {
            cout<<setw(10)<<A[j][i];
        }
        cout<<endl;
    }
    cout<<"Perkalian Matriks A * B = "<<endl;
    for(int i=0; i<3; i++)
    {
        for(int j=0; j<3; j++)
        {
            C[i][j]=0;
            for(int k=0;k<3;k++)
            {
                C[i][j]=C[i][j]+A[i][k]*B[k][j];
                cout<<setw(10)<<C[i][j];
            }
        cout<<endl;
        }
    }
}