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Perl Tutorial - 19: IF Statement in Perl Video Lecture | Perl Building Blocks: An Introduction to Perl - Back-End Programming
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FAQs on Perl Tutorial - 19: IF Statement in Perl Video Lecture - Perl Building Blocks: An Introduction to Perl - Back-End Programming
| 1. What is an IF statement in Perl? |  |
| 2. How do you write an IF statement in Perl? | |
Ans. To write an IF statement in Perl, you use the keyword "if" followed by a condition enclosed in parentheses. The code block to be executed if the condition is true is enclosed in curly braces. For example:
```
if ($num > 10) {
print "The number is greater than 10";
}
```
| 3. Can an IF statement in Perl have an "else" clause? | |
Ans. Yes, an IF statement in Perl can have an "else" clause. The "else" clause is used to specify a block of code that should be executed when the condition of the IF statement is false. For example:
```
if ($num > 10) {
print "The number is greater than 10";
} else {
print "The number is not greater than 10";
}
```
| 4. Can an IF statement in Perl have multiple conditions? | |
Ans. Yes, an IF statement in Perl can have multiple conditions using logical operators such as "&&" (AND), "||" (OR), and "!" (NOT). These operators can be used to combine multiple conditions and create more complex logical expressions. For example:
```
if ($num > 10 && $num < 20) {
print "The number is between 10 and 20";
}
```
| 5. What happens if there are nested IF statements in Perl? | |
Ans. When there are nested IF statements in Perl, it means that one IF statement is present within another IF statement. In such cases, the inner IF statement is evaluated only if the condition of the outer IF statement is true. This allows for more complex conditional logic and the execution of different code blocks based on multiple conditions.
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