// ignore_for_file: non_constant_identifier_names
void main() {
// var userName = 10;
// print(userName);
// Sum() {
// print("sum");
// }
// Sum();
UserData user = UserData();
user.father_name = "Hassan";
user.name = "ali";
user.showName();
UserData().age = 10;
print(UserData().age);
}
class UserData {
String name = '';
String father_name = '';
int age = 0;
// method
showName() {
// print(name + father_name);
print("$name your father name is ${father_name.toUpperCase()}");
}
}
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