Range of values of C types
c
Solution
Both ranges are valid, what is unusual is the first one [-32767...32767] but it is perfectly right according to C standard.
In many implementations minimum value for a short integer is `-(2^15 - 1)` then `-32768`. You'll see it defined as:
#define SHRT_MIN 0x7FFF
#define SHRT_MIN (-32767 - 1)
#define SHRT_MIN (-32768)
Standard asserts that it must be `(-2^15 + 1)` (then `-32767`) or less (because the actual value depends on the particular system and library implementation). Because most implementations use two's complement to represent negative numbers (when zero is unsigned for integers) then minimum negative value is one unit less. In practice it means that you can be sure that when you write your program (regardless of compiler and platform) at least you can store `-32767` in a `short` (but for some compilers/platforms range may be wider as you saw in your compiler).
Please note that in this case `-32768` makes sense (for platforms where `sizeof(int) > sizeof(short)`), not like with `MIN_INT`, because literal value is actually an `int` (not a `short`).
Problem
In C standard is written that, i.e., an `int` should have: - min -32767 max 32767 but in implementation, i.e. on a 16 bit machine that values are: - min -32768 max 32767 Why do that difference in negative values?