Read one unsigned int and print the value one greater than it, in the form Next: 42. Your program should handle
n = 4294967295 (which is UINT_MAX, i.e. 2^32 - 1) correctly – that’s the whole point of the exercise.
Unlike signed overflow, this has a single, boring, guaranteed answer: unsigned integer arithmetic in C wraps modulo
2^32 (for a 32-bit unsigned int) by definition, not as an implementation quirk. UINT_MAX + 1 == 0 is something
you can rely on in real code – it’s the reason, for example, that an unsigned loop counter counting down past
zero doesn’t go negative, it wraps to a huge positive number, which is a real bug pattern worth recognizing.