Obtaining an address given a (run time) variable name

[DLearner]

// In the code below, what fn needs to go in the commented-out 
line,
// to make the program print 7, 11 rather than 7, 7?

```
void main() {

    import std.stdio;

    int IntVar1 = 5;
    int IntVar2 = 7;
    int IntVar3 = 11;

    int*   wkVarAddr;
    char[] wkVarName;


    wkVarAddr = &IntVar2;
    writeln("*wkVarAddr = ", *wkVarAddr);

    wkVarName = cast(char[])("IntVar3");
//   wkVarAddr = fn (wkVarName);
    writeln("*wkVarAddr = ", *wkVarAddr);
}
```