学生成绩管理系统c语言编程

学生成绩管理系统是一个利用C语言编写的程序，通过链表、指针和封装函数等基本知识实现对学生信息的管理和操作[^1]。其中，一个功能是实现学生信息的排序，按照总成绩的降序排列，并打印所有学生的信息。

以下是一个示例代码，演示了如何实现学生成绩管理系统中的成绩排序功能：

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

// 定义学生结构体
typedef struct Student {
    char name[20];
    int score;
    struct Student* next;
} Student;

// 创建学生节点
Student* createStudent(char name[], int score) {
    Student* student = (Student*)malloc(sizeof(Student));
    strcpy(student->name, name);
    student->score = score;
    student->next = NULL;
    return student;
}

// 添加学生节点到链表
void addStudent(Student** head, char name[], int score) {
    Student* student = createStudent(name, score);
    if (*head == NULL) {
        *head = student;
    } else {
        Student* current = *head;
        while (current->next != NULL) {
            current = current->next;
        }
        current->next = student;
    }
}

// 打印学生信息
void printStudents(Student* head) {
    Student* current = head;
    while (current != NULL) {
        printf("Name: %s, Score: %d\n", current->name, current->score);
        current = current->next;
    }
}

// 按照总成绩降序排序
void sortStudents(Student** head) {
    int swapped;
    Student* current;
    Student* last = NULL;

    if (*head == NULL) {
        return;
    }

    do {
        swapped = 0;
        current = *head;

        while (current->next != last) {
            if (current->score < current->next->score) {
                // 交换节点
                char tempName[20];
                int tempScore;

                strcpy(tempName, current->name);
                tempScore = current->score;

                strcpy(current->name, current->next->name);
                current->score = current->next->score;

                strcpy(current->next->name, tempName);                current->next->score = tempScore;

                swapped = 1;
            }
            current = current->next;
        }
        last = current;
    } while (swapped);
}

int main() {
    Student* head = NULL;

    // 添加学生信息
    addStudent(&head, "Alice", 85);
    addStudent(&head, "Bob", 92);
    addStudent(&head, "Charlie", 78);
    addStudent(&head, "David", 95);

    // 打印原始学生信息
    printf("Original students:\n");
    printStudents(head);

    // 按照总成绩降序排序
    sortStudents(&head);

    // 打印排序后的学生信息
    printf("\nSorted students:\n");
    printStudents(head);

    return 0;
}

这段代码演示了一个简单的学生成绩管理系统，通过创建学生节点、添加学生信息、打印学生信息和按照总成绩降序排序等功能来实现学生成绩的管理。