responsi plug 8

#include <iostream>
#include <string.h>
using namespace std;

//constant for login with nim and passwddeclared
const int id= 123160064;
const char passwd[30]= "agus@123";
//public array to store data
int harga[100],jumlah[100],total[100];
char namabarang[][30]={};

//declaration of function
void baliknama();
void inputdata(int *a);
void rekapdata(int a);
void tambahdata(int *a);
void matriks();

//storing of total shoping
int totalbelanja=0;


//main begin
main()
{

int nim;
char password[30];
cout<<"Selamat datang di responsi"<<endl;
cout<<"masukan nim      : ";cin>>nim;
cin.ignore();
cout<<"masukan password : ";cin.getline(password,30);
while(1)
{
    if(nim==id&&strcmp(passwd,password)==0)
        break;
    if(nim!=id)
    {
        cout<<"nim salah"<<endl;
    }
    else
    if(strcmp(passwd,password)==1)
    {
        cout<<"password salah"<<endl;
    }
    else
    if(strcmp(passwd,password)==1&&nim!=id)
    {
        cout<<"nim &password salah"<<endl;
    }

    cout<<"masukan nim      : ";cin>>nim;
    cin.ignore();
    cout<<"masukan password : ";cin.getline(password,30);
}

char y;
int menu,jml;
//do while for show menu multiple times
do{

    cout<<"Menu"<<endl;
    cout<<"1. Balik nama"<<endl;
    cout<<"2. Input Data"<<endl;
    cout<<"3. Rekap Data"<<endl;
    cout<<"4. Tambah Data"<<endl;
    cout<<"5. Matriks"<<endl;
    cout<<"pilih : ";cin>>menu;

    // get your switch here
    switch(menu)
    {
    case 1:
        baliknama();
        cout<<"kembali ke menu utama? y/n";cin>>y;
        break;
    case 2 :
        inputdata(&jml);
        cout<<"kembali ke menu utama? y/n";cin>>y;
        break;
    case 3 :
        rekapdata(jml);
        cout<<"kembali ke menu utama? y/n";cin>>y;
        break;
    case 4:
        tambahdata(&jml);
        cout<<"kembali ke menu utama? y/n";cin>>y;
        break;
    case 5:
    matriks();
    cout<<"kembali ke menu utama? y/n";cin>>y;
    break;
    }


}

while(y=='y');
}

//print your name backwards
void baliknama()
{
    char nama[30];int x;
    cin.ignore();
    cout<<"masukan nama : ";cin.getline(nama,30);
    x=strlen(nama);
    for(int i=x-1;i>=0;i--)
    {
        cout<<nama[i];

    }
    cout<<endl;


}
 //input to our arrays
void inputdata(int *a)
{   int x=total[1],y=jumlah[1],z=jumlah[1],posx,posy,posz;
    cout<<"masukan jumlah barang : ";cin>>*a;
  for(int i=1;i<=*a;i++)
  {
      cout<<"data ke "<<i<<endl;
      cout<<"masukan nama barang :";cin.ignore();cin.getline(namabarang[i],30);
      cout<<"masukan harga :";cin>>harga[i];
      cout<<"masukan jumlah :";cin>>jumlah[i];

      total[i]=jumlah[i]*harga[i];

  }

}

//print our arrays
void rekapdata(int a)
{
  for(int i=1;i<=a;i++)
  {

      cout<<"data ke "<<i<<endl;
      cout<<"nama barang : "<<namabarang[i]<<endl;
      cout<<"++++++++++++++++++++++++++++++"<<endl;
      cout<<"|harga   : "<<harga[i]<<endl;
      cout<<"|jumlah  : "<<jumlah[i]<<endl;
      cout<<"|total   : "<<total[i]<<endl;
      cout<<"++++++++++++++++++++++++++++++"<<endl<<endl;
  }

  //get max,min value
  int x=0,y=0,z=999999999,posx,posy,posz;
  for(int i=1;i<=a;i++)
  {
      if(x<harga[i])
        {
            x=harga[i];
            posx=i;

        }
       if(y<total[i])
        {
            y=total[i];
            posy=i;

        }
        if(z>total[i])
        {
            z=total[i];
            posz=i;

        }
      totalbelanja+=total[i];

  }
  cout<<"total belanja         = " <<totalbelanja<<endl;
  cout<<"harga termahal        = " <<namabarang[posx]<<endl;
  cout<<"total terbesar        = " <<namabarang[posy]<<endl;
  cout<<"total terkecil        = " <<namabarang[posz]<<endl;



}

//add datain arrays
void tambahdata(int *a){
int tambah;
cout<<"masukan jumlah data tambahan : ";cin>>tambah;
for(int i = *a+1;i<=*a+tambah;i++)
{
      cout<<"data ke "<<i<<endl;
      cout<<"masukan nama barang :";cin.ignore();cin.getline(namabarang[i],30);
      cout<<"masukan harga :";cin>>harga[i];
      cout<<"masukan jumlah :";cin>>jumlah[i];

      total[i]=jumlah[i]*harga[i];

}
*a+=tambah;


}
//logic matrix procedure start here
void matriks(){
    int angka,limit;
    cout<<"masukan angka : ";cin>>angka;
    limit = angka;
    for(int i=0;i<angka;i++)
    {
        for(int j=0;j<angka;j++)
        {
                cout<<(limit-1)*(j-1)<<" \t ";
        }
    limit--;
   cout<<endl;
    }

}

//end of code