BUBBLE SORT-descending

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

void main ()
{
clrscr();
int arr[100];
int b,a,x,z;

printf ("\n             PROGRAM BUBBLE SORTING \n");
printf("*---**----*--*----***-----****---*---**----*--*---**----*------*\n\n\n");
for(a=1;a<=10;a++)
{cout<<"Data ke-"<<a<<"=";
cin>>arr[a];}
{printf("\n\nData Sebelum di-Sort\n");
printf("----------------------------------------------------\n"); }
for(a=1;a<=10;a++)
{cout<<" ["<<arr[a]<<"] ";}
  for (a=1;a<=10;a++)
   {
    for (x=1;x<=10-a;x++)
     {
      if (arr[x]<arr[x+1])
{
z=arr[x];
arr[x]=arr[x+1];
arr[x+1]=z;
}
     }
  }

printf("\n\n\n\n\nData Setelah di-Sort\n");
printf("====================================================\n");
for (a=1;a<=10;a++)
{printf (" [%d] ", arr[a]);}
printf("\n====================================================\n\n\n\n");
printf("                                    Composed By :JAYARI/ 10540040\n");
printf("                  Terimakasih>>>>>>>\n\n");
printf("Press Anykey to Exit!!");
getch();
}