Voir la source de HP Prime/Commands/Guides/All About Strings

<div style='text-align: center;'>This is a backup copy of the article from the old "HPWiki" of TI-Planet (that only hosted HP Prime info), initially authored by Iconmaster</div><hr>
The string data type has a [[HP Prime/Commands/TYPE|type ID]] of 2.

= Making Constants =

String constants are enclosed "like this". An unclosed string constant is always a syntax error.

You can use backslash escapes in string constants. The valid escapes are the following:

{| class="wikitable"
|-
! Escape code !! Meaning
|-
| \n || Newline
|-
| \r || Carriage Return
|-
| \t || Tab
|-
| \\ || Backslash
|-
| \" || Double-quote
|-
| "" || Double-quote
|-
| \0 || NUL
|-
| \nnn || Where 'nnn' is an octal number: The literal character with code nnn. '100', the lowest valid nnn, is @.
|-
| \Xnn || Where 'nn' is an hex number: The literal character with code nn.
|-
| \unnnn || Where 'nnnn' is an hex number: The literal character with code nn. The 16-bit version of \X.
|}

= Use =

String variables are indexable. Getting a number from a string results in a character code, and setting it sets a character code:
<pre>
LOCAL s := "Hello";
PRINT(s[1]);
s[1] := 52;
</pre>
The number has to be in range, else an error is thrown. Decimals are rounded down to integers.

Getting a substring can be done by indexing a string variable with two arguments. The first one is index, and the second is the number of characters to get:
<pre>
LOCAL s := "Hello";
PRINT(s[2,2]);
</pre>
The second number has to be any number greater than or equal to zero.

Setting an index of a string with another string performs a limited replacement.
<pre>
LOCAL s := "Hello";
s[1] := "World";
</pre>
The length of the string assigned to is preserved; that is, if the replacement would make the string longer, it is truncated instead.

= Limits =

Strings may have at maximum 65,535 (2^16-1) characters in them. Attempting to create a longer string will result in [[HP Prime/Commands/Guides/Error Codes|error 38]] being thrown.