Dart Practice Exercises: Essential Techniques for Mastering the Framework

Here’s a short practice exercise to help you practice using Dart:

Instructions

Create a new Dart project called my_app, and create a new file in the lib folder called main.dart.

Write a program that does the following:

1. Defines a list of integers, containing the values [1, 2, 3, 4, 5].
2. Uses a for loop to calculate the sum of the integers in the list.
3. Prints the sum to the console.

Example Solution

dartCopy codevoid main() {
  List<int> numbers = [1, 2, 3, 4, 5];
  int sum = 0;
  
  for (int number in numbers) {
    sum += number;
  }
  
  print('The sum of the numbers is $sum.');
}

In this solution, we’re defining a list of integers called numbers, and initializing it with the values [1, 2, 3, 4, 5].

We’re then using a for loop to iterate over the values in the list, and adding each value to a variable called sum.

Finally, we’re printing the value of sum to the console using string interpolation.

When you run this program, you should see the following output in your terminal:

pythonCopy codeThe sum of the numbers is 15.