test: 重构 Student 类并简化 Main 函数

playground/Demo/Demo32/Main.snow

@@ -1,32 +1,34 @@
 module: main
-	struct: Student extends Person
+    import: os
+
+    struct: Student
         fields:
+            declare name: int
             declare studentId: int
+
         init:
             params:
                 name: int
                 studentId: int
             body:
-	            super(name)
+                this.name = name
                 this.studentId = studentId
             end body
         end init
 
-	    // 新增：无参数构造
         init:
             params:
             body:
-	            super(0)
+                this.name = 0
                 this.studentId = 0
             end body
         end init
 
-	    // 新增：只带 name
         init:
             params:
                 name: int
             body:
-	            super(name)
+                this.name = name
                 this.studentId = -1
             end body
         end init
@@ -45,12 +47,9 @@ module: main
             declare a: Student = new Student(123, 1001)
             declare b: Student = new Student()
             declare c: Student = new Student(88)
-	        os.println(a.getName())      // 123
+            println(a.getStudentId())
-	        os.println(a.getStudentId()) // 1001
+            println(b.getStudentId())
-	        os.println(b.getName())      // 0
+            println(b.getStudentId())
-	        os.println(b.getStudentId()) // 0
-	        os.println(c.getName())      // 88
-	        os.println(c.getStudentId()) // -1
         end body
     end function
 end module