Class Type for GML/Javascript "var" in C++

I've been thinking about a class for "var" as you might see in GML or Javascript:
eg:

Code:

var number;
number = 0;
number = string(number) + " - Now a string";

(GML)

How could such a class be written in C++?

What I am thinking of right now, is something like:

Code:

class var {
public:
 double d_value;
 int type;
 char* s_value;
 void set(double tosetto_v)
 {
  type = 0;
  d_value = tosetto_v;
 }
 void set(char* tosetto_v)
 {
  type = 1;
  s_value = tosetto_v; // I don't think this works, but im just showing my idea rather than making working code
 }
}

To use it, it would be something like:

Code:

int main()
{
 var test;
 test.set("Hello!");
 system("cls");
 if(test.type == 1)
 {
  cout << test.s_value << "\n";
 }
 system("pause");
 return 0;
}

:/ C++ looks kinda complicated.

XD C++ can be complicated. C is easier, but it doesn't have booleans >.>

luke wrote:XD C++ can be complicated. C is easier, but it doesn't have booleans >.>

*or classes