狗子编程序

⑴ 编写程序：声明一个哺乳动物类Mammal,再由此派生出狗类Dog和猫类Cat

#include using namespace std; enum myColor{BLACK ,WHITE}; class Mammal{ public : //constructors Mammal(); ~Mammal(); //acessors int GetAge() const{ret...urn itsAge;} void SetAge(int age){itsAge=age;} int GetWeight (int weight){itsWeight=weight;} //Others void Speak() const{cout

⑵ java 编程序 计算四只狗的平均体重,找出体重最大的和最小的狗的狗的名字.通过输入狗的名字查找它的体重

完整代码如下，复制到eclipse中运行：

importjava.util.ArrayList;
importjava.util.Scanner;

publicclassDemo02{
	privateStringname;
	privatedoubled;
	
	publicStringgetName(){
		returnname;
	}

	publicvoidsetName(Stringname){
		this.name=name;
	}

	publicdoublegetD(){
		returnd;
	}

	publicvoidsetD(doubled){
		this.d=d;
	}
	
	//平均体重
	publicstaticdoubleavg(ArrayList<Demo02>al){
		intsum=0,avg=0;
		for(Demo02d:al){
			sum+=d.getD();
		}
		returnsum/al.size();
	}
	
	//根据姓名看体重
	publicstaticvoiddis(ArrayList<Demo02>al,Stringname){
		for(Demo02dog:al){
			if(name.equals(dog.getName())){
				System.out.println("你要找的狗是："+dog.getName()+".体重是："+dog.getD());
			}
		}
	}
	
	//找出最重的狗和最轻的狗
	publicstaticvoidfind(ArrayList<Demo02>al){
		Demo02t=newDemo02();
		for(intk=0;k<al.size()-1;k++){
			for(intj=k+1;j<al.size();j++){
				if(al.get(k).getD()<al.get(j).getD()){
					t.setName(al.get(k).getName());
					t.setD(al.get(k).getD());
					al.get(k).setName(al.get(j).getName());
					al.get(k).setD(al.get(j).getD());
					al.get(j).setName(t.getName());
					al.get(j).setD(t.getD());
				}
			}
		}
		System.out.println("最重的狗的名字："+al.get(0).getName()+".
最轻的狗名字："+al.get(al.size()-1).getName());
	}

	publicstaticvoidmain(String[]args){
		ArrayList<Demo02>al=newArrayList<Demo02>(4);
		
		Demo02d1=newDemo02();
		d1.setName("秋田犬");
		d1.setD(20);
		al.add(d1);
		
		Demo02d2=newDemo02();
		d2.setName("哈士奇");
		d2.setD(70);
		al.add(d2);
		
		Demo02d3=newDemo02();
		d3.setName("藏獒");
		d3.setD(40);
		al.add(d3);
		
		Demo02d4=newDemo02();
		d4.setName("松狮");
		d4.setD(30);
		al.add(d4);
		
		System.out.println("平均体重为："+avg(al));
		
		System.out.print("输入狗的姓名：");
		Scannersc=newScanner(System.in);
		dis(al,sc.nextLine());
		find(al);
	}
}

运行结果如下：