CPP
#include <iostream>
#include <fstream>
#include <algorithm>
#include <string>
using namespace std;
class Student {
private:
string name;
int numb;
int year;
string sex;
int birth;
string address;
int phone;
string email;
public:
static int count;
Student() {}
Student(string name, int numb, int year, string sex, int birth, string address, int phone, string email);
~Student() {}
void chaxun(const Student* stu);
void show() const;
void in() const;
static void add(Student students[], int& count);
static void deletes(Student students[], int& count);
static void paixu(Student students[], int count);
static void cunchufile(const Student students[], int count);
static void jiazaixinxi(Student students[], int& count);
static void display(const Student students[], int count);
static bool compareStudents(const Student& s1, const Student& s2);
};
int Student::count = 0;
Student::Student(string name1, int numb1, int year1, string sex1, int birth1, string address1, int phone1, string email1) {
in();
name = name1;
numb = numb1;
year = year1;
sex = sex1;
birth = birth1;
address = address1;
phone = phone1;
email = email1;
}
void Student::chaxun(const Student* stu) {
int a;
cin >> a;
if (a == stu->numb) {
show();
}
else {
cout << "查无此人" << endl;
}
}
void Student::show() const {
cout << "姓名：" << name << endl;
cout << "学号：" << numb << endl;
cout << "入学年份：" << year << endl;
cout << "性别：" << sex << endl;
cout << "出生日期：" << birth << endl;
cout << "家庭地址：" << address << endl;
cout << "联系电话：" << phone << endl;
cout << "电子邮箱：" << email << endl;
}
void Student::in() const {
ifstream in;
in.open("students.txt", ios::out);
in.close();
}
void Student::add(Student students[], int& count) {
if (count < 100) {
string name, sex, address, email;
int numb, year, birth, phone;
cout << "请输入学生姓名：";
cin >> name;
cout << "请输入学生学号：";
cin >> numb;
cout << "请输入学生入学年份：";
cin >> year;
cout << "请输入学生性别：";
cin >> sex;
cout << "请输入学生出生日期：";
cin >> birth;
cout << "请输入学生家庭地址：";
cin >> address;
cout << "请输入学生联系电话：";
cin >> phone;
cout << "请输入学生电子邮箱：";
cin >> email;
students[count] = Student(name, numb, year, sex, birth, address, phone, email);
count++;
cout << "添加学生信息成功！" << endl;
}
}
void Student::deletes(Student students[], int& count) {
int numb;
cout << "请输入要删除的学生的学号：";
cin >> numb;
int index = -1;
for (int i = 0; i < count; i++) {
if (students[i].numb == numb) {
index = i;
break;
}
}
if (index != -1) {
for (int i = index; i < count - 1; i++) {
students[i] = students[i + 1];
}
count--;
cout << "删除成功！" << endl;
}
else {
cout << "抱歉，未找到学号为" << numb << "的学生！" << endl;
}
}
void Student::paixu(Student students[], int count) {
sort(students, students + count, compareStudents);
cout << "排序完成！" << endl;
}
void Student::cunchufile(const Student students[], int count) {
ofstream file("students.txt");
if (file.is_open()) {
for (int i = 0; i < count; i++) {
file<< students[i].name << " " << students[i].numb << " " << students[i].year << " "<< students[i].sex << " " << students[i].birth << " " << students[i].address << " "<< students[i].phone << " " << students[i].email << endl;
}
file.close();
cout << "保存成功！" << endl;
}
else {
cout << "无法打开文件！" << endl;
}
}
void Student::jiazaixinxi(Student students[], int& count) {
ifstream file("students.txt");
if (file.is_open()) {
string name, sex, address, email;
int numb, year, birth, phone;
while (file >> name >> numb >> year >> sex >> birth >> address >> phone >> email)
{
students[count] = Student(name, numb, year, sex, birth, address, phone, email);
count++;
}
file.close();
cout << "加载成功！" << endl;
}
}
void Student::display(const Student students[], int count) {
for (int i = 0; i < count; i++)
{
cout << "学生信息" << i + 1 << ":" << endl;
students[i].show();
cout << endl;
}
}
bool Student::compareStudents(const Student& s1, const Student& s2) {
return s1.name < s2.name;
}
int main() {
Student students[100];
int count = 0;
int choice;
while (true) {
cout << " **************欢迎来到学生信息管理系统**************" << endl;
cout << " **************1. 添加学生信息**************" << endl;
cout << " **************2. 删除学生信息**************" << endl;
cout << " **************3. 排序学生信息**************" << endl;
cout << " **************4. 显示学生信息**************" << endl;
cout << " **************5. 保存学生信息到文件**************" << endl;
cout << " **************6. 从文件加载学生信息**************" << endl;
cout << " **************0. 退出**************" << endl;
cout << "**************请输入选择：";
cin >> choice;
switch (choice) {
case 1:Student::add(students, count);break;
case 2:Student::deletes(students, count);break;
case 3:Student::paixu(students, count);break;
case 4:Student::display(students, count);break;
case 5:Student::cunchufile(students, count);
case 6:Student::jiazaixinxi(students, count); break;
case 0: break;
default:cout << "错误" << endl;break;
}
} while (choice != 0);
return 0;
}
