用C＋＋输入10个学生5门课的成绩，分别用函数实现下列功能：①计算每个学生平均分 ②计算每门课的平均分； ③找出所有50个分数中最高的分数所对应的学生和课程

在C++中，你可以通过定义结构体存储学生和课程的成绩信息，然后创建函数来实现所需的功能。首先，我们可以定义一个Student和CourseScore结构： ```cpp #include <iostream> #include <vector> #include <map> // 定义学生结构 struct Student { std::string name; std::vector<int> scores; // 存储5门课成绩 }; // 定义课程分数结构 struct CourseScore { int courseID; int score; }; // 函数计算每个学生的平均分 double calculateAverage(Student& student) { double sum = 0; for (int score : student.scores) sum += score; return sum / student.scores.size(); } // 函数计算每门课的平均分 double calculateCourseAverage(const std::vector<CourseScore>& allScores) { double total = 0; for (const auto& score : allScores) total += score.score; return total / allScores.size(); } // 函数找出最高分及其对应的课程和学生 std::pair<std::string, int> findHighestScore(const std::vector<Student>& students) { int highestScore = -1; std::string studentWithHighestScore; int courseWithHighestScore = -1; for (const auto& student : students) { for (int i = 0; i < student.scores.size(); ++i) { if (student.scores[i] > highestScore) { highestScore = student.scores[i]; studentWithHighestScore = student.name; courseWithHighestScore = i + 1; // 假设课程ID从1开始计数 } } } return {studentWithHighestScore, courseWithHighestScore}; } int main() { std::vector<Student> students(10); std::vector<CourseScore> allScores; // 输入10个学生的成绩 for (int i = 0; i < 10; ++i) { std::cout << "请输入第" << i+1 << "位学生的信息 (name): "; std::getline(std::cin, students[i].name); for (int j = 0; j < 5; ++j) { std::cout << "请输入第" << j+1 << "门课程的成绩: "; int score; std::cin >> score; students[i].scores.push_back(score); CourseScore cs = {j+1, score}; // 假设课程ID从1开始计数 allScores.push_back(cs); } } // 计算平均分并输出结果 for (auto& student : students) { double avg = calculateAverage(student); std::cout << "学生 " << student.name << " 的平均分是: " << avg << std::endl; } double courseAvg = calculateCourseAverage(allScores); std::cout << "所有课程的平均分是: " << courseAvg << std::endl; // 找出最高分及其对应信息 auto result = findHighestScore(students); std::cout << "最高分 (" << highestScore << ") 属于学生 " << result.first << ", 课程 " << result.second << std::endl; return 0; } ```