1. #include <cstdlib>
#include <iostream>
using namespace std;
class Matrix{
public :
Matrix(){
cout<<" Program Matrix n";
cout<<" Muhammad Alfin torikin Boengn";
cout<<" 12018048 n";
}
void input();
void proses();
void output();
private :
int matrix[4][4];
int a,b, sum;
};
void Matrix::input(){
for(a=0;a <=3;a++){
for(b=0;b <=3;b++)
{
cout<<"Masukan angka di baris "<<a<<" dan di kolo "<<b <<" : ";
cin>>matrix[a][b];
}
cout<<endl;

2. }
for(a=0;a<=3;a++){
for(b=0;b <=3;b++){
cout<<matrix[a][b];
}
{
cout<<endl;
}
}
};
void Matrix::output(){
cout<<sum;
};
void Matrix::proses(){
sum =matrix[a][b];
};
int main(int argc, char *argv[])
{
Matrix alfin;
alfin.input();
alfin.proses();
alfin.output();
system("pause");
return 0;

3. }