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This code converts decimal number to hexadecimal number
I wrote it by Borland 5.02 .

Good Luck

//Decimal to hexadecimal number
//programming by : Erfan Nasoori
//Date of send : 2009/1/11

#include <iostream.h>

void main()
{
 int x,y,i;
 int d,n=1;
 int * r;
 char h[16]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};

 cout<<"Enter x : ";
 cin>>x;
 y=x;
 while(x >= 10)
 {
 	x/=10;
   ++n;
 }
 r=new int[n];
 for(i=0 ; y >= 16 ; ++i)
 {
 	r[i]=y%16;
   y /= 16;
 }
 r[i++]=y;

 cout<<"16 base = ";
 for(i=(n-1) ; i>=0 ; --i)
 {
 	cout<<h[r[i]];
 }
cin.get();
}