Initial commit

test/grammer/oop/01.dart

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+class Human {
+  String name = '';
+  double weight = 0;
+  double height = 0;
+}
+
+void main(){
+  Human toly = Human();
+  toly.name = "捷特";
+  toly.weight = 70;
+  toly.height = 180;
+
+  print("Human: name{${toly.name},weight:${toly.weight}kg,height:${toly.height}cm}");
+}

test/grammer/oop/02.dart

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+class Human {
+  String name = '';
+  double weight = 0;
+  double height = 0;
+
+  Human(this.name,this.weight,this.height);
+}
+
+void main(){
+  Human toly = Human("捷特",70,180);
+  print("Human: name{${toly.name},weight:${toly.weight}kg,height:${toly.height}cm}");
+}

test/grammer/oop/03.dart

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+class Human {
+  String name = '';
+  double weight = 0;
+  double height = 0;
+
+  Human(this.name, this.weight, this.height);
+
+  String info() {
+    return "Human: name{${name},weight:${weight}kg,height:${height}cm}";
+  }
+}
+
+void main() {
+  Human toly = Human("捷特", 70, 180);
+  print(toly.info());
+
+  Human ls = Human("龙少", 65, 179);
+  print(ls.info());
+
+  Human wy = Human("巫缨", 65, 179);
+  print(wy.info());
+}
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test/grammer/oop/04.dart

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+class Human {
+  String name = '';
+  double weight = 0;
+  double height = 0;
+
+  Human(this.name, this.weight, this.height);
+
+  double bmi() {
+    double result = weight / ((height/100) * (height/100));
+    return result;
+  }
+
+  String info() {
+    return "Human: name{${name},weight:${weight}kg,height:${height}cm}";
+  }
+}
+
+class Student extends Human {
+  final String school;
+
+  Student(
+    super.name,
+    super.weight,
+    super.height, {
+    required this.school,
+  });
+
+  @override
+  String info() {
+    String info = super.info() + "school: $school ";
+    return info;
+  }
+
+}
+
+void main() {
+  Student toly = Student("捷特", 70, 180,school: "安徽建筑大学");
+  print(toly.bmi());
+  print(toly.info());
+}