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| # Constants Feature Test
| # Test declaration of immutable constants and verify re-assignment errors
|
| # Declare constant string and print
| const string $name = "Alice";
| printnl($name);
|
| # Declare constant integer and print
| const int $x = 100;
| printnl($x);
|
| # Declare mutable variable and modify
| string $y = "mutable";
| printnl($y);
| $y = "changed";
| printnl($y);
|
| # Attempt to modify constant (should produce runtime error)
| $name = "Bob";
|
|
