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  1. import 'dart:io';
  2.  
  3. import 'dart:math';
  4.  
  5. void main() {
  6.   dynamic shape = 'Circle'; 
  7.  
  8.   dynamic result = [];
  9.  
  10.   result
  11.     ..add(shape is! String ? 'Unknown' : shape)
  12.     ..add(
  13.         shape == 'Circle' ? (pi * 5 * 5).toStringAsFixed(2)
  14.         : shape == 'Rectangle' ? (4 * 3).toString()
  15.         : 'Unknown');
  16.  
  17.   print('Shape: ${result[0]}');
  18.   print('Area: ${result[1]}');
  19. }
  20.  
Success #stdin #stdout 1.67s 129956KB
comments (?)
stdin 
Standard input is empty
stdout 
Shape: Circle
Area: 78.54
https://ideone.com/3XtxfJ
language:
Dart (dart 2.3.0)
created:
1 day ago
visibility:
public

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