Print statements not showing in console in WebStorm while - Dart - dart

Question

So I'm new to Dart and WebStorm and I'm having trouble with the print statements. I have several print statements in my code, but when I run it, none of them appear.
Here's my code:
import 'dart:io';
void main() {
int choice = 0;
String line;
String firstName, lastName, contact;
do {
print("Please choose a number: /n");
print("1 - Add a contact /n");
print("2 - Edit a contact /n");
print("3 - Look for a contact /n");
print("0 - Exit application /n");
line = stdin.readLineSync();
choice = int.parse(line);
switch (choice) {
case 1:
{
print("Enter contact's first name: ");
firstName = stdin.readLineSync();
print("Enter contact's last name: ");
lastName = stdin.readLineSync();
print("Enter a contact number: ");
contact = stdin.readByteSync();
print("Is this an office or home contact?");
print("Is this an office or home contact?");
}
case 0:
{
return 0;
}
}
} while (choice > 3 || choice < 0);
}
The console shows this when I try to run it:
C:\dart-sdk\bin\dart.exe --ignore-unrecognized-flags --checked --enable-vm-service:51901 --trace_service_pause_events "C:\Users\myname\WebstormProjects\untitled\Test.dart"
Process finished with exit code 254

Answer 1

How are attempting to run the dart file? I just created a new Project and pasted your code in and right clicked on file and pressed run "filename".
Then, I recieved this
Please choose a number: /n
1 - Add a contact /n
2 - Edit a contact /n
3 - Look for a contact /n
0 - Exit application /n