Editing Infinite loop (section)

===Impossible termination condition===
An example [[for loop]] in [[C (programming language)|C]]:
<syntaxhighlight lang="c">
unsigned int i;
for (i = 1; i != 0; i++) {
  /* loop code */
}
</syntaxhighlight>
It appears that this will go on indefinitely, but in fact the value of <code>i</code> will eventually reach the maximum value storable in an <code>unsigned int</code> and adding 1 to that number will wrap-around to 0, breaking the loop. The actual limit of <code>i</code> depends on the details of the system and [[compiler]] used. With [[arbitrary-precision arithmetic]], this loop would continue until the computer's [[memory (computers)|memory]] could no longer hold <code>i</code>. If <code>i</code> was a signed integer, rather than an unsigned integer, overflow would be undefined. In this case, the compiler could optimize the code into an infinite loop.