how to convert a decimal number to hexadecimal in c++ code example

Example 1: int to hexadecimal in c++

#include <sstream>
std::stringstream sstream;
sstream << std::hex << my_integer;
std::string result = sstream.str();

Example 2: Convert a hexadecimal number into decimal c++

#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
    int x;
    cin >>hex >> x;
    cout << x << endl;
    return 0;
}