The result of the operation is a string that consists of repeating the first operand (string) the specified number of times. This operator takes two operands: the first is the string to repeat, and the other is the number of times to repeat the provided string. This operator concatenates (connects) two strings together to form a larger string. The true value in Perl can be represented by 1 (or non-zero value), while the empty string “” represents the false value.įor strings concatenation and repetition, there are two operators:.performs a logical AND between the results of the two above comparisons.checks if the entered number is less than or equal to 10.checks the entered number (which is stored in the variable $a) if it is greater than 0. ![]() The following script outputs true if the user’s input is greater than 0 and less than or equal to 10. This operator returns true if either if its operands are ture. It returns true if (and only if) both operands are true. The following table lists the logical operators supported in Perl: Operator The Logical operators do this job in software programs. This is the concept of the logic gates in brief. ![]() The third gate: the NOT gate inverts its input. On the other hand, if the switches were in parallel, for the current to flow, only one switch needs to be ON. If one of them is OFF, the current won’t flow, and the result will be OFF. For the current to flow from point to another across the two switches, both switches need to be ON. Consider two electrical switches connected together in series. There are three basic logic gates: AND, OR, and NOT. If you have studied Logic, you may have some knowledge of the Logic gates. Let’s see how this script will behave when executed: The script should compare the two numbers, and print the result of the comparison. The following script will accept two numbers from the user.
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