How do I use an if/else control structure in perl?
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This is frequently used logic in many programming languages.
The if/else control structure, similar to making human decisions.
$num = 50; if ($num lt 19) { print "'$num' is smaller than 19.\n"; } else { print "'$num' is bigger than 19.\n"; print "We've hit the big time!.\n"; }
Normally you would not hardcode the $num value, it would be taken from user input or calculated within the script. If the $num is greater than 19 it will print one message otherwise it will print the other.
In the example, it will always print the messages after the else keyword, because $num is hardcoded and is greater than 19. Just change the $num to a number less than 19 to demo the other print statement.
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