[Chris27]

As a CS student at CMU, I've always been told that

if(isSomeCondition == true) { ... }

is horrible style, and this really should be written as

if(isSomeCondition) { ... }

if(isSomeCondition = true)

Is "correct" syntax and by itself will not cause a run time error. However this will cause your program to behave incorrectly (for instance the if statement will always evaluate to true) which could definitely lead to a run time error if e.g.

if(somePtr = NULL) { ... }
else { 
  somePtr->someField = someValue;
}

I assume this is what you meant apalrd?