Question

How to check if stdin input value is odd or even in Dart

Answer 1

import 'dart:io';

void main() {
    print("Enter a number: ");
    var n = stdin.readLineSync();

    int? rv = int.tryParse(n ?? '-1');

    if (rv == null) {
        print("Invalid input");
    } else if (rv.isEven) {
        print("even");
    } else if (rv.isOdd) {
        print("odd");
    }
}




/*
run:

Enter a number: 234
even

*/

 

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