C++

#include <iostream>
#include <cstdlib>
using namespace std;

void cek_admin(string admin[][2],string u_admin,string p_admin,int panjang, string &kondisi){

			for(int i=0;i<panjang;i++){
                if(u_admin==admin[i][0] && p_admin==admin[i][1]){
                    kondisi= "berhasil";
            	}
            }
}

int main()
{
    string admin[][2]={{"admin","admin"},
                      {"admin1","admin1"}};

    string user[][2]={{"user","user"},
                      {"user1","user1"},
                      {"user2","user2"}};
    string buku[][2]={{"buku","pertama"},
                      {"buku2","kedua"}};

    int panjang_user = sizeof(user)/sizeof(user[0]);
    int panjang_admin = sizeof(admin)/sizeof(admin[0]);
    int pilihan,pilihan2;

    do{
    	string kondisi="";
    	string u_admin="",p_admin="";
    	string u_user,p_user;

        cout<<"\t Selamat datang "<<endl;
        cout<<"\t Silahkan pilih hak akses mu "<<endl;
        cout<<"1.user\n2.admin"<<endl;
        cin>>pilihan;

        switch(pilihan){
            case 1:
                cout<<"1.login\n2.guest" <<endl;
                cin>>pilihan2;
                        switch(pilihan2){
                                case 1:
	                                cout<<"login user";
	                                break;

                                case 2:
	                                cout<<"guest";
	                                break;

                                default:
                                    cout<<"tidak ada";
									break;
                            }

               break;

            case 2:
            	//cout<< panjang_admin << endl;
                cout<<"login admin"<<endl;
                cout<<"username :";
                cin>>u_admin;
                cout<<"password :";
                cin>>p_admin;

				cek_admin(admin,u_admin,p_admin,panjang_admin, kondisi);
                cout << kondisi << endl;

				break;

            case 3:
	            cout<<"keluar";
	            break;


            default:
            	cout<<"tidak ada";
            	break;

        }

    }while(pilihan != 3);

	return 0;

}