Decimal to Hex Converter

#include <iostream>
#include <sstream>
#include <algorithm>

using namespace std;

void hexConverter(int num, string hex)
{
    if(num!=0)
    {
        int x=num%16;
        num/=16;
        if(x==10)hex+="A";
        else if(x==11)hex+="B";
        else if(x==12)hex+="C";
        else if(x==13)hex+="D";
        else if(x==14)hex+="E";
        else if(x==15)hex+="F";
        else
        {
            stringstream convert;
            convert<<x;
            hex+=convert.str();
        }
        hexConverter(num,hex);
    }
    else
    {
        reverse(hex.begin(),hex.end());
        cout<<hex<<endl;
    }
}

int main()
{
    int num;
    cout<<"Enter a number to convert it to Hexadecimal ";
    cin>>num;
    cout<<num<<" in Hexadecimal is ";
    hexConverter(num,"");
    return 0;
}