课本例题变化--体重身高检验机器

public class Test {
public static void main(String[]args){
DataBase test=new DataBase();
test.print();

}
}

public class People {
float weight;
int height;
void speak(){
System.out.println("My height is "+height+"cm");
System.out.println("My weight is "+weight+"kg");
}

}

public class Machine {
public void estimate(int height,float weight){
double number=(height-100)/weight;
if(number>=1.1){
System.out.println("You are a little thin !");
}
else if(number>=0.96&&number<1.1){
System.out.println("You are normal !");
}
else if(number<0.96){
System.out.println("You are little fat !");

}
}

}

public class DataBase {
void print(){
People zhangsan,lisi;
Machine tijianqi;
zhangsan=new People();
lisi=new People();
tijianqi=new Machine();
zhangsan.weight=82.5f;
zhangsan.height=176;
zhangsan.speak();
tijianqi.estimate(zhangsan.height,zhangsan.weight);
lisi.weight=77.2f;
lisi.height=186;
lisi.speak();
tijianqi.estimate(lisi.height,lisi.weight);
}

}