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Description

The copy function accepts up to three of the parameters described below (the last parameter is optional), and returns a value of type string which is formed by copying zero or more characters from the first parameter.

Parameters

1. The first parameter S is an expression of type string or type char, and contains the characters to be copied.
2. The second parameter P is an expression of integral type, and specifies the position, in S of the first character to copy. If P is greater than the number of charaters in S then no characters are copied.
3. The third parameter N is an expression of integral type, and specifies the number of characters to copy. If N is omitted or is greater than the number of characters in S from P to the end, then all characters in S starting from P to the end are returned.

Example

   copy('Testing...', 5, 2)         returns   'in'
   copy('Testing...', 7)             returns   'g...'
   copy('Testing...', 1, 1000)    returns   'Testing...'
   copy('Testing...', 50)            returns   ''

Portability

Operating Systems: All
Standard Pascal: No