Signed short int
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C++ '''signed short''' will take at least 16 bits of memory to hold and cannot be less than [[signed char]] in any specific implementation; it can, however, differ from compiler to compiler. Signed short usually gets stored as [[two's complement]] integer, but it is not a requirement of the standard. | C++ '''signed short''' will take at least 16 bits of memory to hold and cannot be less than [[signed char]] in any specific implementation; it can, however, differ from compiler to compiler. Signed short usually gets stored as [[two's complement]] integer, but it is not a requirement of the standard. | ||
Revision as of 10:58, 12 May 2015
C++ signed short will take at least 16 bits of memory to hold and cannot be less than signed char in any specific implementation; it can, however, differ from compiler to compiler. Signed short usually gets stored as two's complement integer, but it is not a requirement of the standard.
signed int can safely store values -2¹⁵ – 2¹⁵-1, if the value gets too large or too small, a roll over can take place. While the fact of a roll over is a guarantee at some point, a coder cannot assume that it will happen in a specific place, SHRT_MIN and SHRT_MAX constants from <climits> library can be used to determine that.
Other C++ data types of the same size
- unsigned short
- char16_t (although this is not a requirement, and the program should not rely on these two being the same size, unless you know that you will not change the compiler used).
- signed int (unsigned char is less than or equal to signed int, in many implementations they are equal, but it is not a requirement)
Other C++ data types storing signed integers
- signed char at least 8 bits
- int not less than 16 bits, not smaller than short
- long not less than 32 bits, not smaller than int
- long long not less than 64 bits, not smaller than long
