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Introduction to Dart

bookwhile Loop in Dart

A while loop is a programming construct that allows you to execute a specific block of code as long as a certain condition is true.

The syntax for a while loop in Dart is as follows:

loop.dart

loop.dart

copy

              
123

            
while (condition) { 
  // Statements to be executed while a condition is `true` 
}
  • Before entering the loop, the condition in parentheses is checked. If it’s true, the loop runs.
  • After each run, the condition is checked again. If still true, it repeats.
  • When the condition becomes false, the loop stops and the program continues.
Note
Note

It is important to remember that while loops can be infinite if the condition never becomes false. Remember, it is essential to check the condition carefully.

main.dart

main.dart

copy

              
12345678

            
void main() {
  int counter = 0;
    
  while (counter < 5) {
    print(counter);
    counter = counter + 1;
  }
}

The while loop runs as long as counter is less than 5. Since counter starts at 0, the loop executes five times, increasing counter by 1 on each iteration.

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SectionΒ 4. ChapterΒ 2

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bookwhile Loop in Dart

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A while loop is a programming construct that allows you to execute a specific block of code as long as a certain condition is true.

The syntax for a while loop in Dart is as follows:

loop.dart

loop.dart

copy

              
123

            
while (condition) { 
  // Statements to be executed while a condition is `true` 
}
  • Before entering the loop, the condition in parentheses is checked. If it’s true, the loop runs.
  • After each run, the condition is checked again. If still true, it repeats.
  • When the condition becomes false, the loop stops and the program continues.
Note
Note

It is important to remember that while loops can be infinite if the condition never becomes false. Remember, it is essential to check the condition carefully.

main.dart

main.dart

copy

              
12345678

            
void main() {
  int counter = 0;
    
  while (counter < 5) {
    print(counter);
    counter = counter + 1;
  }
}

The while loop runs as long as counter is less than 5. Since counter starts at 0, the loop executes five times, increasing counter by 1 on each iteration.

question-icon

What does the syntax of a while loop look like?

Click or drag`n`drop items and fill in the blanks

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 4. ChapterΒ 2
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