unsigned integers in C [closed]

Answer 1

You should use %u as a format specifier in the printf, otherwise the value is casted to int.

Answer 2

Unsigned integers are always non-negative, that is greater than or equal to 0. When you subtract 1 from 0 in an unsigned integer type you end up with MAX_INT.

Therefore, your for loop will never terminate.

However, you need to use "%u" not "%d" in your printf if you want it to print the unsigned value rather than the signed value.

Answer 3

The %d format string treats the substituted value as int, which is signed.