Introduction :

Dart integer class contains two properties to check if a number is even or odd. We can check these properties to find out quickly if a number is odd or even. In this tutorial, I will show you how to do that :

isEven and isOdd :

isEven and isOdd are two boolean values that you can access in an integer variable in dart. Just check for these values to find out if a number is odd or even.

In the below example, we will take one number as input from the user and find out if it is odd or even.

Example program :

import 'dart:io';

void main() {
  int? number;

  print("Enter a number : ");
  var data = stdin.readLineSync();

  number = int.tryParse(data ?? '-1');

  if (number == null) {
    print("Invalid input.");
  } else if (number.isEven) {
    print("$number is an even number");
  } else if (number.isOdd) {
    print("$number is an odd number");
  }
}

Sample Output :

Enter a number :
12
12 is an even number

Enter a number :
13
13 is an odd number

Note that it will also work for negative numbers. For example, if your number is -12, it will print as an even number.

You might also like:

• Different ways to insert items to a list in dart
• Different ways to remove items from a dart list
• Dart program to swap two user given numbers
• Constants defined in dart-math library
• How to check if a string contains a number in Dart
• How to get the current date-time in Dart
• Dart program to find the absolute value of a number