java编写程序 实现定义学生信息类，包括学生的姓名、学号

1 学生类

class Student{

private String name;

private String number;

private int score;

//get/set省

public Student(){

}

public Student(String name, String number, int score){

thisname=name;

thisnumber=number;

thisscore=score;

}

}

import javautilArrayList;

import javautilScanner;import comsunorgapachexpathinternalArg;

public class Student {

//两个私有属性

private int no ;

private String name ;

//默认构造函数

public Student(){}

//带参构造函数

public Student(int no,String name){

thisno=no;

thisname=name;

}

//添加学生信息

public void addStudentInfo(ArrayList list){

String flag1="yes";

do{

Student student=new Student();

Scanner in =new Scanner(Systemin);

Systemoutprintln("请输入学生学号：");

studentsetNo(innextInt());

Systemoutprintln("请输入学生姓名：");

studentsetName(innext());

listadd(student);

Systemoutprintln("是否继续添加学生信息(yes/no)");

flag1=innext();

} while(flag1equals("yes"));

}

//读取学生信息

public void showStudentInfo(ArrayList<Student> list){

Systemoutprintln(" 学生no： "+" 学生name: ");

for(Student student:list){

Systemoutprintln(" "+studentgetNo()+" "+studentgetName());

}

}

public int getNo() {

return no;

}

public void setNo(int no) {

thisno = no;

}

public String getName() {

return name;

}

public void setName(String name) {

thisname = name;

}

public static void main(String arg[]) {

ArrayList<Student> studentList= new ArrayList<Student>();

Student student= new Student();

Scanner inn= new Scanner(Systemin);

while(true){

Systemoutprintln("----------------- 欢迎使用学生管理系统------------------");

Systemoutprintln("1输入学生信息");

Systemoutprintln("2显示学生信息");

Systemoutprintln("0退出系统");

Systemoutprintln("请选择");

int nn= innnextInt();

switch (nn) {

case 1:

studentaddStudentInfo(studentList);

break;

case 2:

Systemoutprintln("学生信息如下：");

studentshowStudentInfo(studentList);

break;

case 0:

Systemexit(0);

Systemoutprintln("系统退出！");

break;

default:

break;

}

}

} }

#include "stdioh"

#include <stdlibh>

#define SIZE 10

struct student{

char id[20];

char sex[10];

int age;

int score[3];

float average;

} stud[SIZE];

void input() / 输入学生的信息 /

{

int i;

for(i=0;i<SIZE;i++)

{

printf("第%d个学生的信息:\n",i+1);

scanf("%s%s%d%d%d%d",stud[i]id,stud[i]sex,&stud[i]age,&stud[i]score[0],&stud[i]score[1],&stud[i]score[2]);

stud[i]average=(stud[i]score[0]+stud[i]score[1]+stud[i]score[2])/30;

}

}

void output() / 输出学生的信息 /

{

int i;

printf("\n");

for(i=0;i<SIZE;i++)

printf("%s %s %d %d %d %d %31f\n",stud[i]id,stud[i]sex,stud[i]age,stud[i]score[0],stud[i]score[1],stud[i]score[2],stud[i]average);

}

void sortput() / 排序输出学生信息 /

{

int i,j;

struct student temp;

for(i=0;i<SIZE;i++)

{

for(j=0;j<SIZE-i-1;j++)

{

if(stud[j]average<stud[j+1]average)

{

temp=stud[j];

stud[j]=stud[j+1];

stud[j+1]=temp;

}

}

}

printf("\n");

for(i=0;i<SIZE;i++)

printf("%s %s %d %d %d %d %31f\n",stud[i]id,stud[i]sex,stud[i]age,stud[i]score[0],stud[i]score[1],stud[i]score[2],stud[i]average);

}

void main()

{

input();

output();

sortput();

}

#include<stdioh>

#include<malloch>

struct Student

{

    int num;  //学号

    char name[20]; //姓名

    struct Score score;

};

struct Score

{

float politic;

float maths;

float english;

float special;

};

int main()

{

    int M,N,i,j;

    printf("Please input M:");

    scanf("%d",&M);

    struct Student stu = NULL;

    stu = (struct Student)malloc(sizeof(struct Student)M); //创建一个结构体含有N个数据

    for(i = 0; i < M; i++)

    {

        printf("Please input the No%d student's number:",i+1);

        scanf("%d",&stu[i]num);

        printf("Please input the No%d student's name:",i+1);

        scanf("%s",stu[i]name);

        stu[i]scorepolitic = 00; //初始化float 老版本编译器如果不初始化可能会报错

printf("Please input the No%d student' score of",i+1);

scanf("%f",&stu[i]scorepolitic);

stu[i]scoremaths = 00; 

scanf("%f",&stu[i]scoremaths);

stu[i]scoreenglish = 00; 

scanf("%f",&stu[i]scoreenglish);

stu[i]scorespecial = 00; 

scanf("%f",&stu[i]scorespecial);

    }

    printf("Please input N:");

    scanf("%d",&N);

for(i = 0; i < M; i++)

{

if(i+1 == N)

{

peinrf("%d %s %2f %2f %2f %2f\n",stu[i]num,stu[i]name,

 stu[i]scorepolitic,

 stu[i]scoremaths,

 stu[i]scoreenglish,

 stu[i]scorespecial);

}

}

    free(stu); //释放

    return 0;

}

以下是用 Python 语言编写的程序，实现读取学生的学号和英语成绩信息，并输出的功能：

# 定义学生信息类

class Student:

def __init__(self, id, name, score):

selfid = id

selfname = name

selfscore = score

# 定义读取学生信息的函数

def read_student_info():

student_list = []

while True:

id = input("请输入学号：")

if id == "":

break

name = input("请输入姓名：")

score = input("请输入英语成绩：")

student_listappend(Student(id, name, score))

return student_list

# 定义输出学生信息的函数

def print_student_info(student_list):

for student in student_list:

print("学号：" + studentid + " 姓名：" + studentname + " 英语成绩：" + studentscore)

# 主函数

def main():

student_list = read_student_info()

print_student_info(student_list)

# 调用主函数

main()

在运行这段程序之后，程序会提示用户输入学号、姓名和英语成绩，用户可以连续输入多个学生的信息。输入空学号时，程序会停止读取学生信息，并输出所有学生的学号、姓名和英语成绩。

#include<stdioh>

int main()

{

int test[]=;

int i,n;

printf("请输入一个数：");

scanf("%d",&n);

for(i=0;i<sizeof(test);i++)

if(n==test[i])

printf("该数在数组中第%d位",i);

if(i==sizeof(test))

printf("数组中没有输入的数");

return 0;

}

这里有一个类

实现学生学号，数学，语文，英语成绩录入

并且计算平均成绩，按照平均成绩高低输出信息

你可以改改！

//实现简单的学生信息输入输出和初步的成绩排序

public class Student {

private int id; //学号

private int mathScore; //数学成绩

private int chinScore; //语文成绩

private int foreScore; //外语成绩

public Student() {

id = 0;

mathScore = 0;

chinScore = 0;

foreScore = 0;

}

public Student(int newId, int newMathScore, int newChinSvore,

int newForeScore) {

id = newId;

mathScore = newMathScore;

chinScore = newChinSvore;

foreScore = newForeScore;

}

public double getAverageScore() { //求平均成绩

double averageScore = ((double) mathScore + chinScore + foreScore) / 3;

return averageScore;

}

public void output(Student student) { //输出对象的内容

Systemoutprintln(" " + studentid + " " + studentmathScore +

" " + studentchinScore + " "

+ studentforeScore + " " +

studentgetAverageScore());

}

public int max(Student a[], int n) { //Student类对象数组的前n项中的成绩最大值的索引

int position = 0;

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

if (a[i]getAverageScore() > a[position]getAverageScore()) { //比较平均成绩

position = i;

}

}

return position;

}

public void selectSort(Student a[]) { //Student类对象数组的选择排序

for (int n = alength; n > 1; n--) {

int i = max(a, n);

Student temp = a[i];

a[i] = a[n - 1];

a[n - 1] = temp;

}

}

}

#include<iostream>#include<cstring>#include<iomanip>#include<fstream>#defineMax 1000usingnamespacestd;classstudent{private: char name[20]; int number; int grade;public: student(char,int,int); charGetName(){returnname;} int GetNo(){returnnumber;} int GetGra(){returngrade;}};student::student(charnames,intnum,intgra){ strcpy(name,names); number=num; grade=gra;}intmain(){ intm; charch[Max],names[20]; intnum,gra; for(inti=0;i<Max;i ){ch[i]='\0';} ifstreammyFile("studenttxt",ios_base::in); if(myFile) { cout<<"已存学生信息:"<<endl; myFileread((char)ch,1000); cout<<ch; } cout<<"请输入需要新建信息的学生人数:"; cin>>m; for(i=0;i<m;i ) { myFileclose(); cout<<"输入第"<<i 1<<"个新建信息学生姓名,学号和成绩:"; cin>>names; cin>>num>>gra; studentstu(names,num,gra); ofstreammyFile1("studenttxt",ios_base::app); myFile1<<"学生:"<<setw(14)<<stuGetName()<<"学号:"<<stuGetNo() <<"成绩:"<<stuGetGra()<<endl; myFile1close(); }} 程序运行示例:

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