Example of a while loop that cannot be replaced by a for loop

Question

The question basically is similar to what is posted here http://stackoverflow.com/questions/1514382/example-of-a-while-loop-that-cant-be-a-for-loop except that there isn't one such example where a certain program using the while loop cannot be replaced by the for loop because of its limitations.

An example is

i=0;
while(i<10)
{
continue;
i=i+2;
}

and

for(i=0;i<10;i++)
{
continue;
i++;
}

In the for loop the continue doesn't stop the increment. I wanted to see something different.

Answer 1

It is obvious that such does not exist, because any while() loop of the form:

while (expression) { }

can be replaced with

for (;expression;) { }

The same is not true of do { } while () loops.

Answer 2

There's no such situation.

In particular, any

while( condition )

may be replaced by

for(; condition ;)

to achieve identical behavior.