Comparison Operators

Part of the Fundamentals section of Coddy's Dart journey — lesson 22 of 94.

Comparison operators in Dart return boolean values, essential for decision-making.

void main() {
  int a = 10;
  int b = 10;
  bool areEqual = a == b;
  
  print('Is $a equal to $b? $areEqual');
}

Dart offers: equality (==), inequality (!=), greater than (>), less than (<), greater than or equal to (>=), and less than or equal to (<=).

Challenge

Beginner

Create a program that compares two game scores using comparison operators:

Declare two integer variables: playerScore with a value of 85 and highScore with a value of 90
Use the comparison operators to check:

If playerScore equals highScore
If playerScore is not equal to highScore
If playerScore is greater than 80
If playerScore is less than highScore
If playerScore is greater than or equal to 85
If playerScore is less than or equal to 100

Store each comparison result in a boolean variable with a descriptive name
Print all the results with labels exactly as shown in the expected output

Your output must match this exact format:

Player score: 85
High score: 90
Scores are equal: false
Scores are different: true
Player score > 80: true
Player score < High score: true
Player score >= 85: true
Player score <= 100: true

Cheat sheet

Comparison operators in Dart return boolean values for decision-making:

== - equality
!= - inequality
> - greater than
< - less than
>= - greater than or equal to
<= - less than or equal to

void main() {
  int a = 10;
  int b = 10;
  bool areEqual = a == b;
  
  print('Is $a equal to $b? $areEqual');
}

Try it yourself

void main() {
  // Declare the score variables here
  int playerScore = ?;
  int highScore = ?;
  
  // Perform comparisons and store results in boolean variables
  bool scoresEqual = playerScore ? highScore;
  bool scoresDifferent = playerScore ? highScore;
  bool scoreAbove80 = playerScore ? 80;
  bool scoreLessThanHigh = playerScore ? highScore;
  bool scoreAtLeast85 = playerScore ? 85;
  bool scoreAtMost100 = playerScore ? 100;
  
  // Print the scores and comparison results
  print("Player score: $playerScore");
  print("High score: $highScore");
  print("Scores are equal: $scoresEqual");
  print("Scores are different: $scoresDifferent");
  print("Player score > 80: $scoreAbove80");
  print("Player score < High score: $scoreLessThanHigh");
  print("Player score >= 85: $scoreAtLeast85");
  print("Player score <= 100: $scoreAtMost100");
}