Program Laundry Menggunakan Array Struct Pointer Sorting Function

Assalamualaikum wr wb..
Berikut program Lundry dengan bahasa pemrograman C++ dengan compiler Dev dengan menggunakan array, struct, pointer, function dan sorting.

#include<stdio.h> #include<conio.h> #include<windows.h> #include<string.h> #include<iostream> using namespace std; void gotoxy(int x, int y) {  COORD coord;  coord.X = x;  coord.Y = y;  SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord); }  int i,j,a,b;  int temp;  int menu;  int cari;    struct Data { char nama[100]; int kode; int sewa,kontak; int cuci,jlh; char almt[30]; }; FILE *FP; //pointer void tugas() //function tidak mengembalikan nilai {  system("cls");  gotoxy(36,5);cout<<"      HARUM LAUNDRY\n"<<endl;  gotoxy(23,7);cout<<"[1] Buat File Pendataan Pakaian Laundry\n"<<endl;  gotoxy(23,8);cout<<"[2] Kode Pakaian \n"<<endl;  gotoxy(23,9);cout<<"[3] Sorting\n"<<endl;  gotoxy(23,10);cout<<"[4] Delete File \n"<<endl;  gotoxy(23,11);cout<<"[0] Exit \n"<<endl;  gotoxy(22,4);cout<<"|---------------------------------------------------|"<<endl;  gotoxy(22,12);cout<<"|---------------------------------------------------|"<<endl;  gotoxy(22,6);cout<<"|---------------------------------------------------|"<<endl; } main() //menu utama {    do //perulangan  {  tugas();   gotoxy(23,14);cout<<"Pilih Menu : "; cin>>menu;   switch(menu) //percabangan   {    case 1 : if ((FP=fopen("SitiMuliaSari.txt","rb"))!=NULL)             {              gotoxy(23,15);cout<<"\n\tFile sudah dibuka, Tekan Sembarang"<<endl;              getche();fclose(FP);             }             else             {              FP=fopen("SitiMuliaSari.txt","wb");              gotoxy(23,15);cout<<"\n\tFile sudah dibuat, Tekan Sembarang"<<endl;              getche();fclose(FP);             }    break;    case 2 : gotoxy(22,17);cout<<"Jumlah Pakaian : "; cin>>a;             if( (FP=fopen("SitiMuliaSari.txt","wb"))==NULL )             {              puts("File tak dapat dibuat!\r\n");             }             Data data[100];              for(i=0;i<a;i++)              {               system("cls");               gotoxy(23,4);cout<<"Pakaian Ke ["<<i+1<<"]"; gotoxy(23,6);cout<<"Kode Pakaian   : ";               cin>>data[i].kode;               gotoxy(23,7);cout<<"Nama                              : ";               cin>>data[i].nama;               gotoxy(23,8);cout<<"Jumlah pakaian                    : ";               cin>>data[i].jlh;               gotoxy(23,9);cout<<"Kontak yang bisa dihubungi        : ";               cin>>data[i].kontak;               gotoxy(23,10);cout<<"Alamat                           : ";               cin>>data[i].almt;               gotoxy(23,11);cout<<"Lama Pencucian / hari            : ";               cin>>data[i].cuci;              }             fwrite(&data,sizeof(data),1,FP);             cout<<"\n"<<endl;             getche();    break;    case 3 : system("cls");      for(i=a-5;i>=0;i--)      {       for(j=0;j<=i;j++)          {           if(data[j].kode>data[j+1].kode)              {               temp=data[j].kode;                 data[j].kode=data[j+1].kode;                 data[j+1].kode=temp;              }          }      }   gotoxy(25,5);cout<<"Pensortiran Berdasarkan Kode :"<<endl;      for(i=0;i<a;i++) //buble sort         {          cout<<"\t\t\t    "<<data[i].kode<<endl;      }              getche();    break;    case 4 : remove("SitiMuliaSari.txt");             gotoxy(23,15);cout<<"File dihapus, Tekan Sembarang"<<endl;             getche();    break;    case 0 : system("cls");       break;       default: cout<<"\n\t ERROR !! HANYA PILIH ANGKA YANG ADA "<<endl;       getch();   }  } while(menu!=0); //perulangan dan validasi dengan do system("exit"); getch(); }

outputnya adalah :