A subroutine is defined by the sub keyword and the block of code that follows. : Subroutine Definition « Subroutine « Perl






  1. Perl
  2. Subroutine
  3. Subroutine Definition

A subroutine is defined by the sub keyword and the block of code that follows.

   


    #!/usr/local/bin/perl -w

    # Declare the subroutine named usage
    sub usage
    {
       my ($program, $exitCode) = @_;

       print "Usage: $program [-v] [-h]\n";
       exit $exitCode;
    }

    usage ($0, 1);








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1.Accessing variables in subroutines
2.Adding two arrays in a subroutine
3.Ading two arrays together
4.Create a subroutine
5.Define subroutine and call it with using global variable
6.Define subroutine prototype
7.Define subroutine then use it
8.Subroutine with arguments defined before it is used
9.Subroutine with no arguments defined after it is used: using ()
10.Subroutine with no arguments defined before it is used
11.Anonymous Subroutines
12.Anonymous functions