Shulou(Shulou.com)06/02 Report--

This article will explain in detail how to use the Perl control structure. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Perl control structure

Let's first take a look at the loop structure in Perl.

While structure of 1:Perl control structure

There are three forms of while structures in perl. * * the forms are as follows:

#! / user/bin/perl-w usestrict; {my$a=0; while (3 > $a) {print$a++; print ";}}

The second is attributive postposition. Hehe, I feel normal if I am good at English.

#! / user/bin/perl-w usestrict; {my$a=0; print$a++. "" while (3 > $a);}

The third one is like this, very weird, really weird. This usage is to add a continue:

#! / user/bin/perl-w usestrict; {my$a=0; while (3 > $a) {print "$a";} continue {if ($aura + > 1) print "hello";}}

This structure runs the part of the continue after each while runs one turn, and then continues with the while loop.

For structure of 2:Perl control structure

For structures are found in all languages. The for structure in perl is very similar to that in the c language. Here is an example.

#! / user/bin/perl-w usestrict; {my$a; for ($axi0boardroa

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