Flutter find the sum of digits of int value

Question

I want to find the sum of the digits of the number entered in Flutter. I want to encode this algorithm.

for example x=1992 result=1+9+9+2=21

how can i do this with flutter

Answer 1

You can do in this way.

import 'dart:io';
 
void main() {
  print('Enter X');
  int X = int.parse(stdin.readLineSync()!);
 
  int result = 0;
  for (int i = X; i > 0; i = (i / 10).floor()) {
    result += (i % 10);
  }
 
  print('Sum of digits\n$result');
}

Output

Enter X 123456 Sum of digits 21