In Visual Studio 2005, how can I run until a variable changes?

Question

I have a loop in my program.  At the beginning of the loop, a certain variable consists of letters.  At the end of the loop, the loop consists of digits.  Inside the loop, I never intentionally change the variable-- I believe it's getting "stepped" on.  I process this loop more than a thousand times when I run the program, so it would not be economical for me to trace the program through to the iteration in which the variable is getting changed (and I don't know which iteration it is, anyway).  I'd like to put a "watch" on the variable (which I've already done, actually) and then run the program until the variable changes so I can see where it's accidentally getting stepped on.

How do you do this in Visual Studio 2005?  It's a C++ program, if that makes any difference at all.

bahamutxd · Accepted Answer

Have you tried using a breakpoint in the IDE when you are debugging your code?      You COULD see what iteration it changed on in runtime if that isn't possible.  

Pseudocode...

bool initialStore = 1;
iteration = 0
do
  iteration++
  if initialStore = 1 
    // Store initial variable
    initialstore = 0
   else if initalStore = 0 AND var != initVar
   print iteration     
loop

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In Visual Studio 2005, how can I run until a variable changes?

1 Answer