学生信息包括：学号，姓名，年龄，性别，出生年月，地址，电话，E-mail，C语言、数学和英语成绩等。试设计一个学生信息管理系统，使之能提供以下功能：  系统以菜单方式工作  学生信息录入功能---输入  学生信息浏览功能——输出  查询、排序功能——算法 1、按学号查询 2、按姓名查询 3、按C语言、数学和英语成绩分别排序  学生信息的插入、删除与修改

好的，以下是一个简单的学生信息管理系统的设计，供你参考：

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

#define MAX_STUDENT_NUM 100

struct student {
    int id;
    char name[20];
    int age;
    char sex[5];
    char birthdate[20];
    char address[100];
    char phone[20];
    char email[50];
    int c_score;
    int math_score;
    int english_score;
};

struct student students[MAX_STUDENT_NUM];
int current_student_num = 0;

void print_menu();
void add_student();
void view_all_students();
void search_by_id();
void search_by_name();
void sort_by_c_score();
void sort_by_math_score();
void sort_by_english_score();
void update_student();
void delete_student();

int main()
{
    int choice;

    while (1) {
        print_menu();
        printf("请输入你要选择的操作：");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                add_student();
                break;
            case 2:
                view_all_students();
                break;
            case 3:
                search_by_id();
                break;
            case 4:
                search_by_name();
                break;
            case 5:
                sort_by_c_score();
                break;
            case 6:
                sort_by_math_score();
                break;
            case 7:
                sort_by_english_score();
                break;
            case 8:
                update_student();
                break;
            case 9:
                delete_student();
                break;
            case 0:
                exit(0);
                break;
            default:
                printf("输入无效，请重新输入。\n");
                break;
        }

        printf("\n");
    }

    return 0;
}

void print_menu()
{
    printf("**********学生信息管理系统**********\n");
    printf("*  1. 录入学生信息                  *\n");
    printf("*  2. 查看所有学生信息              *\n");
    printf("*  3. 按学号查询学生信息            *\n");
    printf("*  4. 按姓名查询学生信息            *\n");
    printf("*  5. 按C语言成绩排序学生信息       *\n");
    printf("*  6. 按数学成绩排序学生信息         *\n");
    printf("*  7. 按英语成绩排序学生信息         *\n");
    printf("*  8. 修改学生信息                  *\n");
    printf("*  9. 删除学生信息                  *\n");
    printf("*  0. 退出程序                      *\n");
    printf("*************************************\n");
}

void add_student()
{
    struct student s;

    printf("请输入学生信息：\n");
    printf("学号：");
    scanf("%d", &s.id);
    printf("姓名：");
    scanf("%s", s.name);
    printf("年龄：");
    scanf("%d", &s.age);
    printf("性别：");
    scanf("%s", s.sex);
    printf("出生年月：");
    scanf("%s", s.birthdate);
    printf("地址：");
    scanf("%s", s.address);
    printf("电话：");
    scanf("%s", s.phone);
    printf("E-mail：");
    scanf("%s", s.email);
    printf("C语言成绩：");
    scanf("%d", &s.c_score);
    printf("数学成绩：");
    scanf("%d", &s.math_score);
    printf("英语成绩：");
    scanf("%d", &s.english_score);

    students[current_student_num++] = s;

    printf("学生信息录入成功！\n");
}

void view_all_students()
{
    if (current_student_num == 0) {
        printf("没有学生信息。\n");
        return;
    }

    printf("学号\t姓名\t年龄\t性别\t出生年月\t地址\t\t电话\t\tE-mail\t\tC语言\t数学\t英语\n");
    for (int i = 0; i < current_student_num; i++) {
        printf("%d\t%s\t%d\t%s\t%s\t%s\t%s\t%s\t%d\t%d\t%d\n",
            students[i].id, students[i].name, students[i].age, students[i].sex,
            students[i].birthdate, students[i].address, students[i].phone, students[i].email,
            students[i].c_score, students[i].math_score, students[i].english_score);
    }
}

void search_by_id()
{
    int id;
    int found = 0;

    printf("请输入要查询的学号：");
    scanf("%d", &id);

    for (int i = 0; i < current_student_num; i++) {
        if (students[i].id == id) {
            printf("学号\t姓名\t年龄\t性别\t出生年月\t地址\t\t电话\t\tE-mail\t\tC语言\t数学\t英语\n");
            printf("%d\t%s\t%d\t%s\t%s\t%s\t%s\t%s\t%d\t%d\t%d\n",
                students[i].id, students[i].name, students[i].age, students[i].sex,
                students[i].birthdate, students[i].address, students[i].phone, students[i].email,
                students[i].c_score, students[i].math_score, students[i].english_score);
            found = 1;
            break;
        }
    }

    if (!found) {
        printf("未找到该学生信息。\n");
    }
}

void search_by_name()
{
    char name[20];
    int found = 0;

    printf("请输入要查询的姓名：");
    scanf("%s", name);

    for (int i = 0; i < current_student_num; i++) {
        if (strcmp(students[i].name, name) == 0) {
            printf("学号\t姓名\t年龄\t性别\t出生年月\t地址\t\t电话\t\tE-mail\t\tC语言\t数学\t英语\n");
            printf("%d\t%s\t%d\t%s\t%s\t%s\t%s\t%s\t%d\t%d\t%d\n",
                students[i].id, students[i].name, students[i].age, students[i].sex,
                students[i].birthdate, students[i].address, students[i].phone, students[i].email,
                students[i].c_score, students[i].math_score, students[i].english_score);
            found = 1;
        }
    }

    if (!found) {
        printf("未找到该学生信息。\n");
    }
}

void sort_by_c_score()
{
    for (int i = 0; i < current_student_num - 1; i++) {
        for (int j = 0; j < current_student_num - i - 1; j++) {
            if (students[j].c_score < students[j+1].c_score) {
                struct student tmp = students[j];
                students[j] = students[j+1];
                students[j+1] = tmp;
            }
        }
    }

    view_all_students();
}

void sort_by_math_score()
{
    for (int i = 0; i < current_student_num - 1; i++) {
        for (int j = 0; j < current_student_num - i - 1; j++) {
            if (students[j].math_score < students[j+1].math_score) {
                struct student tmp = students[j];
                students[j] = students[j+1];
                students[j+1] = tmp;
            }
        }
    }

    view_all_students();
}

void sort_by_english_score()
{
    for (int i = 0; i < current_student_num - 1; i++) {
        for (int j = 0; j < current_student_num - i - 1; j++) {
            if (students[j].english_score < students[j+1].english_score) {
                struct student tmp = students[j];
                students[j] = students[j+1];
                students[j+1] = tmp;
            }
        }
    }

    view_all_students();
}

void update_student()
{
    int id;
    int found = 0;

    printf("请输入要修改的学生的学号：");
    scanf("%d", &id);

    for (int i = 0; i < current_student_num; i++) {
        if (students[i].id == id) {
            found = 1;

            printf("请输入修改后的学生信息：\n");
            printf("学号：");
            scanf("%d", &students[i].id);
            printf("姓名：");
            scanf("%s", students[i].name);
            printf("年龄：");
            scanf("%d", &students[i].age);
            printf("性别：");
            scanf("%s", students[i].sex);
            printf("出生年月：");
            scanf("%s", students[i].birthdate);
            printf("地址：");
            scanf("%s", students[i].address);
            printf("电话：");
            scanf("%s", students[i].phone);
            printf("E-mail：");
            scanf("%s", students[i].email);
            printf("C语言成绩：");
            scanf("%d", &students[i].c_score);
            printf("数学成绩：");
            scanf("%d", &students[i].math_score);
            printf("英语成绩：");
            scanf("%d", &students[i].english_score);

            printf("学生信息修改成功！\n");

            break;
        }
    }

    if (!found) {
        printf("未找到该学生信息。\n");
    }
}

void delete_student()
{
    int id;
    int found = 0;

    printf("请输入要删除的学生的学号：");
    scanf("%d", &id);

    for (int i = 0; i < current_student_num; i++) {
        if (students[i].id == id) {
            found = 1;

            for (int j = i; j < current_student_num - 1; j++) {
                students[j] = students[j+1];
            }

            current_student_num--;

            printf("学生信息删除成功！\n");

            break;
        }
    }

    if (!found) {
        printf("未找到该学生信息。\n");
    }
}

上面代码中，定义了一个 `struct student` 结构体，表示学生信息。然后定义了一个 `students` 数组用于存储所有学生信息，以及一个 `current_student_num` 变量记录当前学生数量。

菜单功能通过 `print_menu()` 函数实现，各功能通过不同的函数实现。其中，学生信息录入功能通过 `add_student()` 函数实现，学生信息浏览功能通过 `view_all_students()` 函数实现，查询功能通过 `search_by_id()` 和 `search_by_name()` 函数实现，排序功能通过 `sort_by_c_score()`、`sort_by_math_score()` 和 `sort_by_english_score()` 函数实现，学生信息的插入、删除与修改通过 `update_student()` 和 `delete_student()` 函数实现。

以上是一个简单的学生信息管理系统的设计，具体实现可以根据需求进行修改和完善。