| string | type |
| Syntax | A stringType is:
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| Description | Each variable whose type is a stringType can contain a sequence (a string ) of characters. The length of this sequence must not exceed the stringType's maximum length.
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| Example |
var name : string
name := "Nancy"
var licenceNumber : string ( 6 )
licenceNumber := "175AJN"
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| Details | Strings can be assigned and they can be compared for both equality and for ordering. See also string comparison and assignment statement. Strings can be catenated (joined together) using the + operator and separated into substrings. See catenation and substring. String functions are provided to find the length of a string, to find where one string appears inside another, and to make repeated copies of a string all joined together. See length, index, and repeat. A string type written without a maximum length is limited to holding a maximum of 255 characters. The maximumLength of a string, if given as a part of the type, must be known at compile time, and must be at least 1 and at most 255. The maximum length of a string is given by upper, for example, upper(licenceNumber) is 6. See also upper. In the declaration of a string that is a var formal parameter of a procedure or function, the maximumLength can be written as an asterisk (*). Here, the maximum length is taken to be that of the corresponding actual parameter, as in:
procedure deblank (var s : string (*) ).The star can also be used when the parameter is an array of strings.
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| See also | explicitStringConstants for exact rules for writing string values such as "Nancy". See also char(n) and char types.
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