Dart basics: Lists & For Loops

main.dart

void main() {
  // A List holds an ordered collection of items.
  // The type of item is specified in the angle brackets < >.

  // A List of Strings
  List<String> shoppingList = ["Apples", "Milk", "Bread"];
  print("Shopping List:");
  for (String item in shoppingList) {
    print("- $item");
  }
  
  print("---");

  // A List of integers (whole numbers)
  List<int> scores = [95, 82, 87, 74];
  int totalScore = 0;
  print("Exam Scores:");
  for (int score in scores) {
    print("Score: $score");
    totalScore = totalScore + score;
  }
  print("Total score is: $totalScore");
  
  print("---");
  
  // A List of doubles (decimal numbers)
  List<double> expenses = [150.50, 45.00, 230.75, 80.00];
  double totalExpenses = 0;
  print("Monthly Expenses:");
  // A 'for' loop goes through each item in the list one by one.
  for (double expense in expenses) {
    print("Processing expense: $expense");
    totalExpenses = totalExpenses + expense; // Add the current expense to the total
  }
  print("Total expenses for the month: $totalExpenses");
}