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 Statement
if Statement
An if statement is a construct that allows you to execute a code block if a specific condition is met.
The condition is an expression that evaluates to a bool value, which can be true or false. If the condition is true, the block of code is executed. If the condition is false, the block of code is skipped.
Syntax
The syntax of the conditional operator is so simple: if keyword, condition in the parentheses ( ) and a code block in the curly brackets { }.
The open curly bracket { } opens the code block, and the close curly bracket symbol closes it.
Example 1
main
void main() { var num=5; if (num>0) { // 5 > 0 ? print("number is positive"); // print if it's `true` } }
The condition was confirmed and the block of code worked.
Example 2
main
void main() { var num = 10; if (num.isNegative) { // 10 < 0 ? print("number < 0"); // print if it's `true` } }
The condition was not confirmed, and the code block did not work.
Task
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