Decimal to Hexadecimal Conversion | C++

#include<iostream>
using namespace std;

int main()
          { 
             int num;
             char sum[100];
             int i=0;
             int rem;
             cout<< "PROGRAM TO CONVERT DECIMAL NUMBER TO HEXADECIMAL [ BY - WWW.BOTTOMSCIENCE.COM ] \n"; 
             cout<<"ENTER THE DECIMAL NUMBER";
             cout<<endl;
             cin>>num;
             cout<<"HEXADECIMAL CONVERSION IS:",num;

             while(num>0)
                         {
                            rem=num%16;
                            if(rem<10)
                                      {
                                         rem=rem+48;
                                         sum[i++]=rem;
                                      }
                            else
                                      {
                                         rem=rem+55;
                                         sum[i++]=rem;
                                      }

                            num=num/16;
                          }

           for(int j=i-1; j>=0; j--)

                                    {
                                       cout<<sum[j];
                                    }

           return 0;

}

OUTPUT