用c语言编写学生成绩管理的代码要求登记查询插入删除学生成绩

以下是一个简单的学生成绩管理系统的C语言代码示例：

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

#define MAX_SIZE 100

struct Student {
    char name[50];
    int score;
};

struct Student students[MAX_SIZE];
int count = 0;

void registerStudent() {
    if (count >= MAX_SIZE) {
        printf("学生人数已满，无法继续添加新学生。\n");
        return;
    }

    struct Student student;
    printf("请输入学生姓名：");
    scanf("%s", student.name);
    printf("请输入学生成绩：");
    scanf("%d", &student.score);

    students[count++] = student;

    printf("学生登记成功！\n");
}

void searchStudent() {
    char searchName[50];
    printf("请输入要查询的学生姓名：");
    scanf("%s", searchName);

    int found = 0;
    for (int i = 0; i < count; i++) {
        if (strcmp(students[i].name, searchName) == 0) {
            printf("学生姓名：%s\n", students[i].name);
            printf("学生成绩：%d\n", students[i].score);
            found = 1;
            break;
        }
    }

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

void insertStudent() {
    if (count >= MAX_SIZE) {
        printf("学生人数已满，无法继续添加新学生。\n");
        return;
    }

    int position;
    struct Student student;

    printf("请输入要插入的位置（1-%d）：", count + 1);
    scanf("%d", &position);

    if (position < 1 || position > count + 1) {
        printf("插入位置无效。\n");
        return;
    }

    printf("请输入学生姓名：");
    scanf("%s", student.name);
    printf("请输入学生成绩：");
    scanf("%d", &student.score);

    for (int i = count; i >= position; i--) {
        students[i] = students[i - 1];
    }

    students[position - 1] = student;
    count++;

    printf("学生插入成功！\n");
}

void deleteStudent() {
    char deleteName[50];
    printf("请输入要删除的学生姓名：");
    scanf("%s", deleteName);

    int found = 0;
    for (int i = 0; i < count; i++) {
        if (strcmp(students[i].name, deleteName) == 0) {
            for (int j = i; j < count - 1; j++) {
                students[j] = students[j + 1];
            }
            count--;
            found = 1;
            break;
        }
    }

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

void displayMenu() {
    printf("=========== 学生成绩管理系统 ===========\n");
    printf("1. 登记学生成绩\n");
    printf("2. 查询学生成绩\n");
    printf("3. 插入学生成绩\n");
    printf("4. 删除学生成绩\n");
    printf("5. 退出\n");
    printf("=======================================\n");
    printf("请输入操作编号：");
}

int main() {
    int choice;

    do {
        displayMenu();
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                registerStudent();
                break;
            case 2:
                searchStudent();
                break;
            case 3:
                insertStudent();
                break;
            case 4:
                deleteStudent();
                break;
            case 5:
                printf("感谢使用学生成绩管理系统！\n");
                break;
            default:
                printf("无效的操作编号，请重新输入。\n");
                break;
        }

        printf("\n");
    } while (choice != 5);

    return 0;
}

此代码实现了学生成绩管理系统的基本功能，包括登记学生成绩、查询学生成绩、插入学生成绩和删除学生成绩。运行程序后，根据提示选择相应的操作即可。