#include
using namespace std;
struct Student {
string student_id;string name;string major;int math_score;int chinese_score;int english_score;int total_score;
};
// 解析数据文件中的一行并创建一个学生对象 Student parseStudent(const string& line) {
istringstream ss(line);string student_id, name, major;int math_score, chinese_score, english_score;ss >> student_id >> name >> major >> math_score >> chinese_score >> english_score;int total_score = math_score + chinese_score + english_score;return { student_id, name, major, math_score, chinese_score, english_score, total_score };
}
// 从文件中读取数据并将其存储在学生对象的向量中
vector
vector<Student> students;ifstream file(filename);if (file.is_open()) {string line;while (getline(file, line)) {students.push_back(parseStudent(line));}file.close();}else {cerr << "错误：无法打开文件 " << filename << endl;}return students;
}
// 用于按总分排序的比较函数（降序） bool compareByTotalScore(const Student& a, const Student& b) {
return a.total_score > b.total_score;
}
void outputStudentsByMajor(const vector
map<string, vector<Student>> studentsByMajor;map<string, int> totalScoreByMajor;// 初始化每个专业的总评分为0for (const auto& student : students) {totalScoreByMajor[student.major] = 0;}// 将学生按专业分类，并计算每个专业的总评分for (const auto& student : students) {studentsByMajor[student.major].push_back(student);totalScoreByMajor[student.major] += student.total_score;}// 输出每个专业的学生总评信息for (auto& pair : studentsByMajor) {sort(pair.second.begin(), pair.second.end(), compareByTotalScore);cout << "专业：" << pair.first << endl;cout << "总评：" << totalScoreByMajor[pair.first] << " 分" << endl;for (size_t i = 0; i < pair.second.size(); ++i) {cout << "排名 " << i + 1 << "：" << pair.second[i].name << "（" << pair.second[i].total_score << " 分）" << endl;}cout << endl;}
}
// 按姓名查找学生信息
void searchStudentByName(const vector
bool found = false;for (const auto& student : students) {if (student.name == name) {cout << "找到学生：" << endl;cout << "姓名：" << student.name << endl;cout << "学号：" << student.student_id<< endl;cout<< "专业：" student.major<<endl;cout<<"数学成绩："<<student.math_score<<endl；cout<<"语文成绩："<<student.chinese_score<<endl；cout<<"英语成绩："<<student.english_score<<endl；cout<<"总分："<<student.total_score<<endl；found = true;break;}}if (!found) {cout << "未找到姓名为 '" << name << "' 的学生。" << endl;}
}
int main() {
string filename = "data.txt";vector<Student> students = readDataFromFile(filename);cout << "按专业输出学生总评信息：" << endl;outputStudentsByMajor(students);// 按姓名查找学生信息string nameToSearch = "张家辉"; // 修改此处为你想要查找的姓名cout << "正在查找姓名为 '" << nameToSearch<< "' 的学生：" << endl;searchStudentByName(students, nameToSearch);return 0;
}
内容由零声教学AI助手提供，问题来源于学员提问
