Signed int - Revision history

VolodyA! V Anarhist at 19:34, 8 June 2015

2015-06-08T19:34:31Z

VolodyA! V Anarhist at 07:24, 13 May 2015

2015-05-13T07:24:46Z

VolodyA! V Anarhist: released

2015-05-13T07:04:10Z

released

VolodyA! V Anarhist: Created page with "{{FormatInfo | name = signed int | formattype = electronic | subcat = Data types | subcat2 = C++ data types | subcat3 = | subcat4 =..."

2015-05-12T12:30:27Z

Created page with "{{FormatInfo | name = signed int | formattype = electronic | subcat = Data types | subcat2 = C++ data types | subcat3 = | subcat4 =..."

New page

{{FormatInfo
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| subcat2 = C++ data types
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{{DISPLAYTITLE:signed int}}

C++ '''signed int''' will take at least 16 bits of memory to hold and cannot be less than [[signed short int]] in any specific implementation; it can, however, differ from compiler to compiler. It usually gets stored as [[two's complement]] integer, but it is not a requirement of the standard. It is the standard way to represent an integer in C++, function <code>main</code> returns int, even though in practice [[unsigned char]] would have been more than sufficient. An integer literal gets interpreted as int, unless followed by extra characters to symbolise that it's something else.

It can be shortened during declaration or conversion to '''signed''' or '''int''', int being the most common.

'''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, INT_MIN and INT_MAX constants from <climits> library can be used to determine that. Many implementations push int into a 32-bit range.

==Other C++ data types of the same size==
* [[unsigned int]]
* [[char16_t]] or [[char32_t]] (depending upon implementation)
* [[signed short int|short]] (it 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
* [[signed short int|short]] not less than 16 bits, not smaller than signed char
* [[signed long|long]] not less than 32 bits, not smaller than int
* [[signed long long|long long]] not less than 64 bits, not smaller than long

[[Category:Integer data types]]
[[Category:Enumerable data types]]

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 '''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, INT_MIN and INT_MAX constants from <climits> library can be used to determine that. Many implementations push int into a 32-bit range.
 ==Other C++ data types of the same size==
 * [[unsigned int]]
 * [[char16_t]] or [[char32_t]] (depending upon implementation)
-* [[signed short int|short]] (it is less than '''or equal to''' signed int, in many implementations they are equal, but it is not a requirement)
+* [[signed short int|short]] or [[signed long int|long]] both can be equal to int, on most implementations at least one of them is.
 ==Other C++ data types storing signed integers==