有2个学生3门成绩，利用函数找出6个成绩中的最高分对应的学生和课程，用c语言写出来

对于第一个问题，代码如下： ```c float calcAverage(float score1, float score2, float score3, float score4) { float average = (score1 + score2 + score3 + score4) / 4; return average; } int main() { float s1_score1, s1_score2, s1_score3, s1_score4; float s2_score1, s2_score2, s2_score3, s2_score4; float s3_score1, s3_score2, s3_score3, s3_score4; // 输入每个学生的成绩 // ... // 计算每个学生的平均分并输出 printf("Student 1's average score: %.2f\n", calcAverage(s1_score1, s1_score2, s1_score3, s1_score4)); printf("Student 2's average score: %.2f\n", calcAverage(s2_score1, s2_score2, s2_score3, s2_score4)); printf("Student 3's average score: %.2f\n", calcAverage(s3_score1, s3_score2, s3_score3, s3_score4)); return 0; } ``` 对于第二个问题，代码如下： ```c float calcCourseAverage(float scores[], int numStudents) { float sum = 0; for (int i = 0; i < numStudents; i++) { sum += scores[i]; } float average = sum / numStudents; return average; } int main() { float course1_scores[3], course2_scores[3], course3_scores[3], course4_scores[3]; // 输入每门课的所有学生成绩 // ... // 计算每门课的平均分并输出 printf("Course 1's average score: %.2f\n", calcCourseAverage(course1_scores, 3)); printf("Course 2's average score: %.2f\n", calcCourseAverage(course2_scores, 3)); printf("Course 3's average score: %.2f\n", calcCourseAverage(course3_scores, 3)); printf("Course 4's average score: %.2f\n", calcCourseAverage(course4_scores, 3)); return 0; } ``` 对于第三个问题，代码如下： ```c void findMax(float scores[][4], int numStudents, int numCourses, int* maxStudent, int* maxCourse) { float maxScore = -1; for (int i = 0; i < numStudents; i++) { for (int j = 0; j < numCourses; j++) { if (scores[i][j] > maxScore) { maxScore = scores[i][j]; *maxStudent = i + 1; *maxCourse = j + 1; } } } } int main() { float scores[3][4]; // 输入3个学生4门课的成绩 // ... int maxStudent, maxCourse; findMax(scores, 3, 4, &maxStudent, &maxCourse); printf("The highest score is %.2f, achieved by student %d in course %d.\n", scores[maxStudent - 1][maxCourse - 1], maxStudent, maxCourse); return 0; } ```

在C语言中，我们可以定义三个函数来实现这些功能。首先，我们需要定义一个结构体`Student`来存储学生的信息，包括姓名和成绩数组。然后，我们定义全局变量来存储最高分及其相关信息。 ```c #include <stdio.h> #include <stdlib.h> // 定义学生结构体 typedef struct { char name[50]; int scores[3]; // 学生的三门课成绩 } Student; // 计算单个学生平均分 float student_avg(Student *student) { float sum = 0; for (int i = 0; i < 3; i++) { sum += student->scores[i]; } return sum / 3; } // 计算每门课的平均分 void course_avg() { float total_scores[3] = {0}; // 初始化每门课总分 int students_count = 0; // 假设学生数组已经存在 Student *students = ...; for (Student *s = students; s != NULL; s++) { for (int i = 0; i < 3; i++) { total_scores[i] += s->scores[i]; students_count++; } } for (int i = 0; i < 3; i++) { printf("Course %d average score is %.2f\n", i+1, total_scores[i] / students_count); } } // 找出最高分及对应信息 void find_max_score(Student **students, int *max_score, int *student_index, int *course_index) { *max_score = students[0]->scores[0]; // 初始假设第一个学生的第一个成绩是最高的 *student_index = 0; *course_index = 0; for (int i = 0; i < students_count; i++) { for (int j = 0; j < 3; j++) { if (students[i]->scores[j] > *max_score) { *max_score = students[i]->scores[j]; *student_index = i; *course_index = j; } } } } int main() { // 初始化学生数组和最高分相关信息 Student *students = ...; // 假设这里已经有了学生的数组 int max_score = 0, student_index = 0, course_index = 0; // 调用函数 printf("Student's average scores:\n"); for (Student *s = students; s != NULL; s++) { printf("%s: %.2f\n", s->name, student_avg(s)); } course_avg(); find_max_score(&students, &max_score, &student_index, &course_index); printf("Highest score: %d, by %s in Course %d\n", max_score, students[*student_index].name, course_index + 1); return 0; } ``` 请注意，这个示例假定有一个学生数组已存在，并且你需要根据实际情况填充它。此外，为了获取全局变量中的学生和课程索引，函数`find_max_score`的参数应该是指向数组的指针。