Variable - Revision history

Thomas at 01:49, 11 October 2017

2017-10-11T01:49:49Z

Thomas at 01:49, 11 October 2017

2017-10-11T01:49:14Z

Chili: /* The const Specifier */

2017-09-11T13:40:15Z

‎The const Specifier

Albinopapa: /* Variable Types */

2016-08-30T23:00:43Z

‎Variable Types

Chili: /* bool */

2016-08-12T06:10:32Z

‎bool

Chili: /* Variable Types */

2016-08-12T06:09:44Z

‎Variable Types

Chili at 11:24, 6 August 2016

2016-08-06T11:24:49Z

Chili at 09:46, 6 August 2016

2016-08-06T09:46:31Z

Chili: /* How to Declare a Variable */

2016-08-06T09:40:43Z

‎How to Declare a Variable

Chili: Created page with "Variables are like little boxes to store data in, typically numbers. What's in the box?! == How to Declare a Variable == You declare/create a variable by stating its type and..."

2016-08-06T09:38:45Z

Created page with "Variables are like little boxes to store data in, typically numbers. What's in the box?! == How to Declare a Variable == You declare/create a variable by stating its type and..."

New page

Variables are like little boxes to store data in, typically numbers. What's in the box?!

== How to Declare a Variable ==
You declare/create a variable by stating its type and then stating its name: <code>int myVar;</code>. You can also give an initial value for the variable using the assignment operator: <code>int myVar = 69;</code>.

== Variable Types ==
=== int ===
<code>int</code> variables store an integer (non-fractional number) ranging from -2147483648 to 2147483647. They occupy 4 bytes of memory.

== The const Specifier ==
You can specify that a variable's value cannot be changed by declaring it like this: <code>const int blazeItFgt = 420;</code>. Doing so can protect your code from unintentional bugs and is generally considered a fucking good practice called 'const correctness'. Note that when you declare a variable as <code>const</code>, you need to initialize it during creation because you cannot assign to it afterwards.

@@ Line 43: / Line 43: @@
 <code>long long</code> variables store an integer ranging from –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.  They usually  occupy 8 bytes in memory.  The type long long can also be referred to as int64_t because it is 64 bits long.
 === int ===
-<code>int</code> variables store an integer (non-fractional number) ranging from -2147483648 to 2147483647. They occupy 4 bytes of memory.
+<code>int</code> variables store an integer (non-fractional number) ranging from -2147483648 to 2147483647. They usually occupy 4 bytes of memory.
 === bool ===
-<code>bool</code> variables store a Boolean logic value (true or false). They usually occupy 4 bytes of memory. The <code>bool</code> type is used to control the operation of flow control statements, such as the <code>if</code> statement.
+<code>bool</code> variables store a Boolean logic value (true or false). They usually occupy 1 bytes of memory. The <code>bool</code> type is used to control the operation of flow control statements, such as the <code>if</code> statement.
 == The const Specifier ==

@@ Line 5: / Line 5: @@
 == Variable Names ==
-Variables names (the same as any other type of user-defined symbol) can contain any number, letter, and the underscore character. They cannot start with a number. Case matters (<code>_DirtayBoi69</code> is not the same symbol as <code>_dirtayboi69</code>).
+Variables names (the same as any other type of user-defined symbol) can contain any number, letter, and the underscore character.
 === Integral types ===
 Integral types are variables that store integers.  There are signed and unsigned versions of each integral type and the built-in or simple types are char, short, int/long, and long long/uint64_t.  Generally, for the signed versions, you do not have to specify signed, but for unsigned versions; unsigned char, unsigned short, unsigned int, unsigned long long, you do have to specify.  Unsigned integrals are integers that don't have negative numbers, they go from 0 to double + 1 their signed counterparts in the positive direction.
@@ Line 15: / Line 39: @@
 <code>char</code> variables store an integer ranging from -128 to 127.  They occupy 1 byte of memory and are most commonly used for narrow text/string manipulation.
 === short===
-<code>short</code> variables store an integer ranging from -32768 to 32767.  They occupy 2 bytes of memory.  An alias for short is wchar_t and is used for wide character text and strings used to extend support for languages with more characters than the char range can handle.
+<code>short</code> variables store an integer ranging from -32768 to 32767.  They usually occupy 2 bytes of memory.  An alias for short is wchar_t and is used for wide character text and strings used to extend support for languages with more characters than the char range can handle.
 === long long ===
-<code>long long</code> variables store an integer ranging from –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.  They occupy 8 bytes in memory.  The type long long can also be referred to as int64_t because it is 64 bits long.
+<code>long long</code> variables store an integer ranging from –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.  They usually  occupy 8 bytes in memory.  The type long long can also be referred to as int64_t because it is 64 bits long.
 === int ===
 <code>int</code> variables store an integer (non-fractional number) ranging from -2147483648 to 2147483647. They occupy 4 bytes of memory.
 === bool ===
-<code>bool</code> variables store a Boolean logic value (true or false). They occupy 4 bytes of memory. The <code>bool</code> type is used to control the operation of flow control statements, such as the <code>if</code> statement.
+<code>bool</code> variables store a Boolean logic value (true or false). They usually occupy 4 bytes of memory. The <code>bool</code> type is used to control the operation of flow control statements, such as the <code>if</code> statement.
 == The const Specifier ==

← Older revision		Revision as of 13:40, 11 September 2017
Line 24:		Line 24:

	== The const Specifier ==		== The const Specifier ==
		+	Main article: [[const]]
		+
	You can specify that a variable's value cannot be changed by declaring it like this: <code>const int blazeItFgt = 420;</code>. Doing so can protect your code from unintentional bugs and is generally considered a fucking good practice called 'const correctness'. Note that when you declare a variable as <code>const</code>, you need to initialize it during creation because you cannot assign to it afterwards.		You can specify that a variable's value cannot be changed by declaring it like this: <code>const int blazeItFgt = 420;</code>. Doing so can protect your code from unintentional bugs and is generally considered a fucking good practice called 'const correctness'. Note that when you declare a variable as <code>const</code>, you need to initialize it during creation because you cannot assign to it afterwards.

@@ Line 11: / Line 11: @@
 <code>int</code> variables store an integer (non-fractional number) ranging from -2147483648 to 2147483647. They occupy 4 bytes of memory.
 === bool ===
-<code>bool</code> variables store a Boolean logic value (true or false). They occupy 4 bytes of memory. The bool type is used to control the operation of flow control statements, such as the if statement.
+<code>bool</code> variables store a Boolean logic value (true or false). They occupy 4 bytes of memory. The <code>bool</code> type is used to control the operation of flow control statements, such as the <code>if</code> statement.
 == The const Specifier ==
 You can specify that a variable's value cannot be changed by declaring it like this: <code>const int blazeItFgt = 420;</code>. Doing so can protect your code from unintentional bugs and is generally considered a fucking good practice called 'const correctness'. Note that when you declare a variable as <code>const</code>, you need to initialize it during creation because you cannot assign to it afterwards.

← Older revision		Revision as of 11:24, 6 August 2016
Line 1:		Line 1:
−	Variables are like little boxes to store data in, typically numbers. What's in the box?!	+	Variables are like little boxes to store data in and read data from, typically numbers. What's in the box?!

	== How to Declare a Variable ==		== How to Declare a Variable ==

@@ Line 3: / Line 3: @@
 == How to Declare a Variable ==
 You declare/create a variable by stating its type and then stating its name: <code>int myVar;</code>. You can also give an initial value for the variable during creation using the assignment operator: <code>int myVar = 69;</code>.
 == Variable Types ==