Зміст курсу
Introduction to Dart
Introduction to Dart
1. First Acquaintance with Dart
2. Variables and Data Types
3. Conditional Statements
4. List and String
if...else Statement
if...else Statement
An if can be followed by an optional else block. The else block will execute if the Boolean expression tested by the if block evaluates to false.
Example
main
void main() { int age = 17; if (age >= 18) { print("You're an adult"); } else { print("You're not an adult yet."); } }
In the example above, the age < 18, so the if code block hasn't been executed. The else code block executes when the if condition is false.
The else syntax is like the if syntax without a condition and parentheses ( )
Task
Write a condition for the if statement to check whether the variable is of type int.
main
void main() { var num = 7.0; if(___){ print('Type: int'); } else { print('Type: other type'); } }
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