Logical Operators
Let's discuss logical operators and how we can use them to evaluate our conditions in Perl.
We'll cover the following
What are logical operators?
Logical operators are used for combining conditional statements. This means that the program can take a decision based on multiple conditions. We will learn more about conditional statements later. But for now, suffice it to say that conditional statements are those that can either be “true” or “false”.
Types of logical operators
There are three logical operators:
&&
orand
||
oror
!
ornot
The and
operator
The and
or &&
operator returns true if all the statements are true. It returns false if one or more statements are false. Let’s say that we have two statements a
and b
. The following table illustrates this behavior:
a |
b |
a && b or a and b |
---|---|---|
true | true | true |
true | false | false |
false | true | false |
false | false | false |
Run the code below to see how this works:
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