I'm looking for a way to convert `hex`

^{(hexadecimal)} to `dec`

^{(decimal)} easily. I found an easy way to do this like :

```
int k = 0x265;
cout << k << endl;
```

But with that I can't input `265`

. Is there anyway for it to work like that:

Input: `265`

Output: `613`

Is there anyway to do that ?

**Note:** I've tried:

```
int k = 0x, b;
cin >> b;
cout << k + b << endl;
```

and it doesn't work.

```
#include <iostream>
#include <iomanip>
#include <sstream>
int main()
{
int x, y;
std::stringstream stream;
std::cin >> x;
stream << x;
stream >> std::hex >> y;
std::cout << y;
return 0;
}
```

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