Increment and Decrement
Increment (++
) and decrement (--
) operators are commonly used to increase or decrease a variable's value by 1
. They are especially useful in loops for managing counters.
Increment Operators
- Pre-increment (
++variable
): increases the value before usage; - Post-increment (
variable++
): increases the value after usage.
Usage in a loop:
main.dart
12345void main() { for (int i = 0; i < 5; ++i) { print(i); // Outputs: 0, 1, 2, 3, 4 } }
Decrement Operators
- Pre-decrement (
--variable
): decreases the value before usage. - Post-decrement (
variable--
): decreases the value after usage.
Usage in a loop:
main.dart
12345void main() { for (int i = 5; i > 0; --i) { print(i); // Outputs: 5, 4, 3, 2, 1 } }
Task
Complete the code so that it prints all numbers from 2 to 10 inclusive.
main.dart
12345void main() { for (int i = 2; i <= 10; ___) { print(i); } }
Use an increment operator.
main.dart
12345void main() { for (int i = 2; i <= 10; i++) { print(i); } }
Danke für Ihr Feedback!
Fragen Sie AI
Fragen Sie AI
Fragen Sie alles oder probieren Sie eine der vorgeschlagenen Fragen, um unser Gespräch zu beginnen
Awesome!
Completion rate improved to 4.55
Increment and Decrement
Swipe um das Menü anzuzeigen
Increment (++
) and decrement (--
) operators are commonly used to increase or decrease a variable's value by 1
. They are especially useful in loops for managing counters.
Increment Operators
- Pre-increment (
++variable
): increases the value before usage; - Post-increment (
variable++
): increases the value after usage.
Usage in a loop:
main.dart
12345void main() { for (int i = 0; i < 5; ++i) { print(i); // Outputs: 0, 1, 2, 3, 4 } }
Decrement Operators
- Pre-decrement (
--variable
): decreases the value before usage. - Post-decrement (
variable--
): decreases the value after usage.
Usage in a loop:
main.dart
12345void main() { for (int i = 5; i > 0; --i) { print(i); // Outputs: 5, 4, 3, 2, 1 } }
Task
Complete the code so that it prints all numbers from 2 to 10 inclusive.
main.dart
12345void main() { for (int i = 2; i <= 10; ___) { print(i); } }
Use an increment operator.
main.dart
12345void main() { for (int i = 2; i <= 10; i++) { print(i); } }
Danke für Ihr Feedback!