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This article mainly explains "Introduction and usage of Perl conditional control". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let Xiaobian take you to learn "Introduction and Usage of Perl Conditional Control"!

Condition control:

if and unless

Cycle control:

for and foreach

while and until

next and last

Use of if:

if(condition){action;} #condition is true, execute action

if(condition 1){

Action 1; #Condition 1 is true, perform action 1

}else{Action 2;} #Otherwise, perform Action 2

if(condition 1){

Action 1; #Condition 1 is true, perform action 1

}elsif(Condition 2){ #Otherwise Condition 2 is true, perform action 2

Operation 2;

}else{Action 3;} #Otherwise, execute Condition 3

Unless the usage:

unless(condition){action;} #If condition is false, perform action

if(1>2){

print"1 > 2\n";

}else{

print"1 2 ?\ N"; #Display: 1>2?

}

At this point, I believe that everyone has a deeper understanding of "Introduction and Usage of Perl Conditional Control". Let's actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

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