I would like to create a while loop where it will keep running under one of two conditions, where the one chosen is determined as a conditional. For example, it would be something along the lines of `while(if (c = true) a<b else b<a)`. Is there any simple syntax for this? Or would I have to go the brute way and do the following? 

```
if (c = true) 
{ 
   while(a<b)
   {
   }
} 
else 
{
   while(b<a)
   {
   }
}

```