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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:

while (condition) { 
  // Statements to be executed while a condition is `true` 
}

  • First, before entering the loop, the condition (which is enclosed in parentheses) is checked. If this condition is true, then the code inside the loop is executed;

  • After executing the code inside the loop, the condition is checked again. If the condition is still true, the loop is executed again. This process continues until the condition becomes false;

  • Once the condition becomes false, the execution of the loop stops, and the program moves on to the code after the loop.

Example

main.dart

main.dart

copy

              
1234567

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

The while loop will repeat as long as the value of the variable counter is less than 5. The loop will repeat five times since the variable counter is initialized to 0. Each time the loop repeats, the value of the variable counter will be incremented by 1.

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What does the syntax of a while loop look like?

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Sezione 4. Capitolo 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:

while (condition) { 
  // Statements to be executed while a condition is `true` 
}

  • First, before entering the loop, the condition (which is enclosed in parentheses) is checked. If this condition is true, then the code inside the loop is executed;

  • After executing the code inside the loop, the condition is checked again. If the condition is still true, the loop is executed again. This process continues until the condition becomes false;

  • Once the condition becomes false, the execution of the loop stops, and the program moves on to the code after the loop.

Example

main.dart

main.dart

copy

              
1234567

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

The while loop will repeat as long as the value of the variable counter is less than 5. The loop will repeat five times since the variable counter is initialized to 0. Each time the loop repeats, the value of the variable counter will be incremented by 1.

question-icon

What does the syntax of a while loop look like?

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

Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 4. Capitolo 2
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