Incrementing 0.1 in floating point number 0.0 gives unexpected result in Dart

Question

I was writing a code to print the sequence 0.1, 0.2, 0.3, ......,1.0 in Dart. I used while loop and wrote the following code

void main() {
  var i = 0.0;
  while (i <= 1) {
    print(i);
    i += 0.1;
  }
}

now the compiler is giving me an unexpected result of my code

0.1
0.2
0.30000000000000004
0.4
0.5
0.6
0.7
0.7999999999999999
0.8999999999999999
0.9999999999999999

Can anyone tell what exactly is happening

Aakash Ghimire · Answer

If you need to print this toStringAsPrecision can fix this If you need it to be double again try double.parse(i.toStringAsPrecision(2));

void main() {
  var i = 0.0;
  while (i <= 1) {
    print(i.toStringAsPrecision(2));
    i += 0.1;
  }
}