生成c语言代码：对学生成绩管理的简单模拟，用菜单选择方式完成下列功能： 输入学生数据； 输出学生数据；学生数据查询；添加学生数据；修改学生数据；删除学生数据，学生成绩统计，其中学生成绩统计功能对给出 n 个学生的考试成绩(每条信息由姓名和分数组成)。

以下是对学生成绩管理的简单模拟的C语言代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_STUDENTS 100

struct Student {
    char name[20];
    int score;
};

struct Student students[MAX_STUDENTS];
int num_students = 0;

void input_student_data() {
    printf("请输入学生姓名和成绩（用空格分隔）：\n");
    scanf("%s %d", students[num_students].name, &students[num_students].score);
    num_students++;
    printf("输入成功！\n");
}

void output_student_data() {
    printf("学生数据如下：\n");
    for (int i = 0; i < num_students; i++) {
        printf("%s %d\n", students[i].name, students[i].score);
    }
}

void search_student_data() {
    char name[20];
    printf("请输入要查询的学生姓名：\n");
    scanf("%s", name);
    for (int i = 0; i < num_students; i++) {
        if (strcmp(students[i].name, name) == 0) {
            printf("%s %d\n", students[i].name, students[i].score);
            return;
        }
    }
    printf("未找到该学生！\n");
}

void add_student_data() {
    printf("请输入要添加的学生姓名和成绩（用空格分隔）：\n");
    scanf("%s %d", students[num_students].name, &students[num_students].score);
    num_students++;
    printf("添加成功！\n");
}

void modify_student_data() {
    char name[20];
    printf("请输入要修改的学生姓名：\n");
    scanf("%s", name);
    for (int i = 0; i < num_students; i++) {
        if (strcmp(students[i].name, name) == 0) {
            printf("请输入修改后的学生姓名和成绩（用空格分隔）：\n");
            scanf("%s %d", students[i].name, &students[i].score);
            printf("修改成功！\n");
            return;
        }
    }
    printf("未找到该学生！\n");
}

void delete_student_data() {
    char name[20];
    printf("请输入要删除的学生姓名：\n");
    scanf("%s", name);
    for (int i = 0; i < num_students; i++) {
        if (strcmp(students[i].name, name) == 0) {
            for (int j = i; j < num_students - 1; j++) {
                strcpy(students[j].name, students[j+1].name);
                students[j].score = students[j+1].score;
            }
            num_students--;
            printf("删除成功！\n");
            return;
        }
    }
    printf("未找到该学生！\n");
}

void statistics_student_data() {
    int sum = 0;
    int max_score = students[0].score;
    int min_score = students[0].score;
    for (int i = 0; i < num_students; i++) {
        sum += students[i].score;
        if (students[i].score > max_score) {
            max_score = students[i].score;
        }
        if (students[i].score < min_score) {
            min_score = students[i].score;
        }
    }
    printf("学生总数：%d\n", num_students);
    printf("平均分数：%d\n", sum / num_students);
    printf("最高分数：%d\n", max_score);
    printf("最低分数：%d\n", min_score);
}

void menu() {
    printf("**********学生成绩管理系统**********\n");
    printf("1.输入学生数据\n");
    printf("2.输出学生数据\n");
    printf("3.学生数据查询\n");
    printf("4.添加学生数据\n");
    printf("5.修改学生数据\n");
    printf("6.删除学生数据\n");
    printf("7.学生成绩统计\n");
    printf("8.退出\n");
    printf("请选择操作：\n");
}

int main() {
    int choice = 0;
    while (1) {
        menu();
        scanf("%d", &choice);
        switch (choice) {
        case 1:
            input_student_data();
            break;
        case 2:
            output_student_data();
            break;
        case 3:
            search_student_data();
            break;
        case 4:
            add_student_data();
            break;
        case 5:
            modify_student_data();
            break;
        case 6:
            delete_student_data();
            break;
        case 7:
            statistics_student_data();
            break;
        case 8:
            printf("退出成功！\n");
            return 0;
        default:
            printf("输入有误，请重新输入！\n");
            break;
        }
    }
    return 0;
}