Initializing help system before first use

substr

Purpose
Get a substring of a string.
Synopsis
function substr(str:string, i1:integer, i2:integer):string
Arguments
str 
String
i1 
Starting position of the substring
i2 
End position of the substring
Return value
Substring of the given string.
Example 
write(substr("Example text", 3, 10))
This outputs the text: ample te
Further information
This function returns the substring from the i1 th to the i2 th character of a given string (the counting starts from 1). This function returns an empty string if the bounds are not compatible with the string ( e.g. starting position larger than the length of the string) or inconsistent ( e.g. starting position after end position).

Parent Topic Predefined functions and procedures

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