java类的定义以及参数传递

class类（类似结构体）的定义

import java.util.Scanner;import java.io.*;

class student{//类的名称 public String name; public String num;

public int age;//定义类中属性：姓名，学号，年龄 public student(){//⽆参的构造函数 }

public student(String name1,String num1,int age1){//有参的构造函数 name=name1; num=num1; age=age1; }

public String getname(){

return name; }

public String getnum(){ return num; }

public int getage(){ return age; }

public void setname(String Name){ name=Name; }

public void setnum(String Num){ num=Num; }

public void setage(int Age){ age=Age; }

public String Detail(){//返回图书信息 return name+\" \"+num+\" \"+age; }}

public class Main {

public static void main(String[] args){ int n,i;

Scanner cin=new Scanner(System.in); student[] stu=new student[109]; //for(i=0;i//stu[i].setname(cin.next()); //stu[i].setnum(cin.next()); //stu[i].setage(cin.nextInt());

stu[i]=new student(cin.next(),cin.next(),cin.nextInt()); }

for(i=1;i<=n;i++)

System.out.println(stu[i].Detail()); } }}

import java.util.Scanner;import java.io.*;public class Main {

public static void main(String[] args){ int n,i;

Scanner cin=new Scanner(System.in); int a[]=new int[1009]; while(cin.hasNext()){ n=cin.nextInt(); for(i=0;iSystem.out.println(Sum(a,n)); } }

public static void Output(int a[],int n){

for(int i=0;iSystem.out.print(a[i]+\" \"); System.out.println(); }

public static int Sum(int a[],int n){ int sum=0;

for(int i=0;i