loops and loop control statements in perl

Perl is a powerful programming language that provides a wide range of loop and loop control statements to control the flow of execution. These statements allow programmers to execute a block of code repeatedly until a certain condition is met.

Here are some of the commonly used loop and loop control statements in Perl:

1. for loop: The for loop is used to iterate over a list of values or a range of numbers. The syntax of the for loop is as follows:

for (my $i = 0; $i < 10; $i++) {
    # block of code to be executed repeatedly
}

2. foreach loop: The foreach loop is used to iterate over a list of values. The syntax of the foreach loop is as follows:

foreach my $var (@list) {
    # block of code to be executed repeatedly
}

3. while loop: The while loop is used to execute a block of code repeatedly as long as a certain condition is true. The syntax of the while loop is as follows:

while (condition) {
    # block of code to be executed repeatedly
}

4. do-while loop: The do-while loop is similar to the while loop, but the block of code is executed at least once before checking the condition. The syntax of the do-while loop is as follows:

do {
    # block of code to be executed repeatedly
} while (condition);

5. until loop: The until loop is used to execute a block of code repeatedly as long as a certain condition is false. The syntax of the until loop is as follows:

until (condition) {
    # block of code to be executed repeatedly
}

6. last statement: The last statement is used to exit a loop prematurely. When executed, it immediately terminates the loop and resumes execution at the statement following the loop. The syntax of the last statement is as follows:

last;

7. next statement: The next statement is used to skip to the next iteration of a loop. When executed, it immediately terminates the current iteration of the loop and resumes execution at the top of the loop. The syntax of the next statement is as follows:

next;

8. redo statement: The redo statement is used to repeat the current iteration of a loop. When executed, it resumes execution at the top of the loop without evaluating the loop condition. The syntax of the redo statement is as follows:

redo;