Editing PureBasic (section)

=== Data types ===
Variable data type specified when you first use it (and optionally - in the future), and is separated from the name of the point. There is a set of basic types - {{mono|.f, .d}} (float and double numbers), {{mono|.b, .c, .w, .l, .q}} (integers - from single-byte and 8-byte), {{mono|.s}} - strings.
{| class="wikitable"
|-
! Type !! Suffix !! Memory usage !! Numerical range
|-
| Byte || {{mono|b}} || 1 byte (8 bits) || −128 ... +127
|-
| Ascii || {{mono|a}} || 1 byte (8 bits) || 0 ... +255
|-
| Character || {{mono|c}} || 1 byte (8 bits) (ascii) || 0 ... +255
|-
| Word || {{mono|w}} || 2 bytes (16 bits) || −32768 ... +32767
|-
| Unicode || {{mono|u}} || 2 bytes (16 bits) || 0 ... +65535
|-
| Character || {{mono|c}} || 2 bytes (16 bits) (unicode) || 0 ... +65535
|-
| Long || {{mono|l}} || 4 bytes (32 bits) || −2147483648 ... +2147483647
|-
| Integer || {{mono|i}} || 4 bytes (32 bits) x86 || −2147483648 ... +2147483647
|-
| Float || {{mono|f}} || 4 bytes (32 bits) || Depending on the ratio of the decimal number.
|-
| Integer || {{mono|i}} || 8 bytes (64 bits) x64 || −9223372036854775808 ... +9223372036854775807
|-
| Quad || {{mono|q}} || 8 bytes (64 bits) || −9223372036854775808 ... +9223372036854775807
|-
| Double || {{mono|d}} || 8 bytes (64 bits) || Depending on the ratio of the decimal number.
|-
| String || {{mono|s}} || (String length + 1) * [[sizeof|SizeOf]](Character) || No limit.
|-
| Fixed String || {{mono|s{length}}} || (String length) * SizeOf(Character) || No limit.
|}

* {{mono|Len(String)}} used to count the length of a string will not exceed the first [[null character]] ({{mono|Chr(0)}}).

In addition to basic types, the user can define the type of construction via
<syntaxhighlight lang="text">
Structure type_name
   field_name.type ; Single field. Perhaps the structures attachment.
   field_name[count].type ; Static arrays.
   ; ... 
   ; Optional construction StructureUnion .. EndStructureUnion allows you
   ; to combine multiple fields into one area of memory
   ; that is sometimes required for the conversion types.
   StructureUnion
      type_name.type
      ; ... 
   EndStructureUnion 
EndStructure
</syntaxhighlight>

Variables can be single (actually, standard variables), [[dynamic array]] (declared using the {{code|lang=blitzbasic|Dim var_name.type_name (size1, size2, ... )}}, a [[linked list]] ({{code|lang=blitzbasic|List() var_name.type_name}}), an [[associative array]] (in new versions of language) ({{code|Map var_name.type_name()}})