asli

#include <iostream>
#include <conio.h>
#include <cstdlib>

using namespace std;

void jumlah(){
    int i,j,x,y;
    cout<< "Masukkan baris matriks A: ";
    cin >>i;
    cout<< "Masukkan kolom matriks A: ";
    cin >>j; cout<<endl;

    int A[i][j];
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< "A[" << x << "][" << y << "]: ";
            cin>>A[x][y];
        }
    } cout<<endl;
    cout<< "Matriks A= " <<endl;
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< A[x][y] << " ";
        }
        cout<<endl;
    }
    cout<< "\nMasukkan baris matriks B: ";
    cin >>i;
    cout<< "Masukkan kolom matriks B: ";
    cin >>j; cout<<endl;

    int B[i][j];
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< "B[" << x << "][" << y << "]: ";
            cin>>B[x][y];
        }
    } cout<<endl;
    cout<< "Matriks B= " <<endl;
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< B[x][y] << " ";
        }
        cout<<endl;
    }
    system("pause");
    system("CLS");
    cout<< "\nMatriks A + Matriks B= " <<endl;
    int C[i][j];
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            C[x][y] = A[x][y] + B[x][y];
            cout<< C[x][y] << " ";
        }
        cout<<endl;
    }
}
void kurang(){
    int i,j,x,y;
    cout<< "Masukkan baris matriks A: ";
    cin >>i;
    cout<< "Masukkan kolom matriks A: ";
    cin >>j; cout<<endl;

    int A[i][j];
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< "A[" << x << "][" << y << "]: ";
            cin>>A[x][y];
        }
    } cout<<endl;
    cout<< "Matriks A= " <<endl;
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< A[x][y] << " ";
        }
        cout<<endl;
    }
    cout<< "\nMasukkan baris matriks B: ";
    cin >>i;
    cout<< "Masukkan kolom matriks B: ";
    cin >>j; cout<<endl;

    int B[i][j];
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< "B[" << x << "][" << y << "]: ";
            cin>>B[x][y];
        }
    } cout<<endl;
    cout<< "Matriks B= " <<endl;
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< B[x][y] << " ";
        }
        cout<<endl;
    }
    system("pause");
    system("CLS");
    cout<< "\nMatriks A - Matriks B= " <<endl;
    int C[i][j];
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            C[x][y] = A[x][y] - B[x][y];
            cout<< C[x][y] << " ";
        }
        cout<<endl;
    }
}
void kali(){
    int i,j,k,temp;
    int x,y,z;

    cout<< "Masukkan kolom matriks A: ";
    cin >>i;
    cout<< "Masukkan baris matriks A: ";
    cin >>j; cout<<endl;

    int A[i][j];
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< "A[" << x << "][" << y << "]: ";
            cin>>A[x][y];
        }
    } cout<<endl;
    cout<< "Matriks A= " <<endl;
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){
            cout<< A[x][y] << " ";
        }
        cout<<endl;
    }
    cout<< "\nMasukkan kolom matriks B: ";
    cin >>j;
    cout<< "Masukkan baris matriks B: ";
    cin >>k; cout<<endl;

    int B[j][k];
    for(y=0; y<j; y++){
        for(z=0; z<k; z++){
            cout<< "B[" << y << "][" << z << "]: ";
            cin>>B[y][z];
        }
    } cout<<endl;
    cout<< "Matriks B= " <<endl;
    for(y=0; y<j; y++){
        for(z=0; z<k; z++){
            cout<< B[y][z] << " ";
        }
        cout<<endl;
    }
    system("pause");
    system("CLS");
    int C[i][k];
    cout<< "Matriks A x Matriks B= " <<endl;
    for(x=0; x<i; x++){
        for(y=0; y<j; y++){

            C[x][y] = 0;

            for(z=0; z<k; z++){
            temp = A[x][z]*B[z][y];
            C[x][y] += temp;
            }
        }
        cout<<endl;
    }

    cout<< "Matriks C= " <<endl;
    for(y=0; y<j; y++){
        for(z=0; z<k; z++){
            cout<< C[y][z] << " ";
        }
        cout<<endl;
    }
}

int main()
{
    int pilihan;

    menu:
    cout<< "\t\t\t#==============================#" <<endl;
    cout<< "\t\t\t#******** MENU MATRIKS ********#" <<endl;
    cout<< "\t\t\t#==============================#" <<endl;
    cout<< "\t\t\t# 1. PENJUMLAHAN               #" <<endl;
    cout<< "\t\t\t# 2. PENGURANGAN               #" <<endl;
    cout<< "\t\t\t# 3. PERKALIAN                 #" <<endl;
    cout<< "\t\t\t# 4. KELUAR                    #" <<endl;
    cout<< "\t\t\t#==============================#" <<endl;
    cout<< "\t\t\t Masukkan pilihan: ";
    cin>>pilihan;

    system("CLS");
    switch(pilihan){
    case 1: jumlah(); break;
    case 2: kurang(); break;
    case 3: kali(); break;
    case 4: exit(0);
    default:
        cout<<"Kode yang anda masukkan salah :(";
    }
    system("pause");
    system("CLS");
    goto menu;
    getch();

    return 0;
}