Labelled block style of loop
More Loops and Conditionals example from a Well House Consultants training course
More on More Loops and Conditionals [link]
Source code: eloop Module: P206
# Here's a labelled block in Perl (you can have blocks even if you're
# not applying a loop or condition to them), and we've used redo to go
# back to the start of the block - thus forming a loop without a loop
# word of any sort.
# This is rather too close to a "goto" statement for some purists, who
# fear that the resultant code becomes hard to follow spaghetti code;
# an alternative is a while loop with a changing condition, or a do-while,
# or a loop with a last.
print "How old are you? ";
chop ($age = <STDIN>);
redo hedgehog if $age < 0;
redo hedgehog if $age > 120;
print "I do like hedgehog and custard\n";
wizard:pl graham$ perl eloop
How old are you? -4
How old are you? 222
How old are you? 34
I do like hedgehog and custard
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This module and example are covered on the following public courses:
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