Beginner program for C++. Having trouble writing a program that converts decimal

Question

Explanation / Answer

#include<iostream.h>
#include<conio.h>
using namespace std;
void main()
{
   clrscr();
   long int dec, rem, quot;
   char hexdec[100];
   int i=1, j, temp,sum=0;
   cout<<"Enter any decimal number to be converted: ";
   cin>>dec;
   quot=dec;
   while(quot!=0)
   {
       temp=quot%16;
       // to convert integer into character
       if(temp<10)
       {
           temp=temp+48;
       }
       else
       {
           temp=temp+55;
       }
       hexdecnum[i++]=temp;
       quot=quot/16;
   }
   cout<<"Equivalent hexadecimal value of "<<decnum<<" is : ";
   for(j=i-1; j>0; j--)
   {
       cout<<hexdecnum[j];
   }
  
do
{
rem=dec%2;
sum=sum + (i*rem);
dec=dec/2;
i=i*10;
}while(dec>0);
cout<<"The binary of the given number is:"<<sum<<endl;
cin.get();
cin.get();

return 0;
}
getch();
}

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