Difference between while loop & do while loop in dart

In Dart, both while and do-while are looping constructs used to repeat a block of code as long as a specified condition is true. However, there is a key difference in when the loop condition is checked.

1. While Loop:

   • In a while loop, the condition is checked before the execution of the loop body.

   • If the condition is initially false, the loop body may not be executed at all.

   • Here's a simple example:

    dartCopy codevoid main() {
      int count = 0;

      while (count < 5) {
        print("While Loop: $count");
        count++;
      }
    }

In this example, the condition count < 5 is checked before entering the loop, and if it's false initially, the loop won't execute.

1. Do-While Loop:

   • In a do-while loop, the condition is checked after the execution of the loop body.

   • This means that the loop body will be executed at least once, even if the condition is false from the beginning.

   • Here's an example:

    dartCopy codevoid main() {
      int count = 0;

      do {
        print("Do-While Loop: $count");
        count++;
      } while (count < 5);
    }

In this example, the loop body is executed at least once because the condition count < 5 is checked after the first iteration.

In summary, the primary difference is in when the loop condition is checked: before the loop body in a while loop and after the loop body in a do-while loop. Use the one that fits the logic of your program based on when you want the condition to be evaluated.