用C++写一个高考成绩管理系统
时间: 2023-10-27 17:05:54 浏览: 64
好的,高考成绩管理系统可以包含以下功能:
1. 添加学生信息
2. 删除学生信息
3. 修改学生信息
4. 查询学生信息
5. 显示所有学生信息
下面是一个简单的实现示例:
```cpp
#include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>
using namespace std;
struct Student {
string name;
int id;
int score;
};
vector<Student> students;
void add_student() {
Student s;
cout << "请输入学生姓名:";
cin >> s.name;
cout << "请输入学生学号:";
cin >> s.id;
cout << "请输入学生分数:";
cin >> s.score;
students.push_back(s);
cout << "添加成功!" << endl;
}
void delete_student() {
int id;
cout << "请输入要删除的学生学号:";
cin >> id;
auto iter = find_if(students.begin(), students.end(), [id](const Student& s) { return s.id == id; });
if (iter != students.end()) {
students.erase(iter);
cout << "删除成功!" << endl;
} else {
cout << "未找到该学生!" << endl;
}
}
void modify_student() {
int id;
cout << "请输入要修改的学生学号:";
cin >> id;
auto iter = find_if(students.begin(), students.end(), [id](const Student& s) { return s.id == id; });
if (iter != students.end()) {
cout << "请输入修改后的学生信息:" << endl;
cout << "姓名:";
cin >> iter->name;
cout << "学号:";
cin >> iter->id;
cout << "分数:";
cin >> iter->score;
cout << "修改成功!" << endl;
} else {
cout << "未找到该学生!" << endl;
}
}
void query_student() {
int id;
cout << "请输入要查询的学生学号:";
cin >> id;
auto iter = find_if(students.begin(), students.end(), [id](const Student& s) { return s.id == id; });
if (iter != students.end()) {
cout << "学生姓名:" << iter->name << endl;
cout << "学生学号:" << iter->id << endl;
cout << "学生成绩:" << iter->score << endl;
} else {
cout << "未找到该学生!" << endl;
}
}
void show_students() {
if (students.size() == 0) {
cout << "暂无学生信息!" << endl;
return;
}
cout << left << setw(10) << "姓名" << setw(10) << "学号" << setw(10) << "分数" << endl;
for (auto& s : students) {
cout << left << setw(10) << s.name << setw(10) << s.id << setw(10) << s.score << endl;
}
}
int main() {
int choice;
do {
cout << "请选择要进行的操作:" << endl;
cout << "1. 添加学生信息" << endl;
cout << "2. 删除学生信息" << endl;
cout << "3. 修改学生信息" << endl;
cout << "4. 查询学生信息" << endl;
cout << "5. 显示所有学生信息" << endl;
cout << "0. 退出程序" << endl;
cin >> choice;
switch (choice) {
case 1:
add_student();
break;
case 2:
delete_student();
break;
case 3:
modify_student();
break;
case 4:
query_student();
break;
case 5:
show_students();
break;
case 0:
cout << "程序已退出!" << endl;
break;
default:
cout << "输入有误,请重新选择!" << endl;
break;
}
} while (choice != 0);
return 0;
}
```
这里使用了 STL 中的 vector,以及算法函数 find_if 和 erase。在 main 函数中,使用 do-while 循环来实现菜单选择。