C语言 学生成绩管理系统

// 学生成绩管理系统示例
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// 学生信息结构体
struct student {
    int num;
    char name[20];
    float pingshi;  // 平时成绩
    float shiyan;   // 实验成绩
    float kaoshi;   // 考试成绩
    struct student *next;
};

// 初始化链表
struct student *init() {
    struct student *head;
    head = (struct student *)malloc(sizeof(struct student));
    head->next = NULL;
    return head;
}

// 头插法插入学生成绩信息
struct student *insert(struct student *head) {
    int judge;
    while (1) {
        printf("是否继续输入成绩: 1(是)/0(否) ");
        scanf("%d", &judge);
        if (judge == 1) {
            struct student *p;
            p = (struct student *)malloc(sizeof(struct student));
            if (!head->next) {
                head->next = p;
                p->next = NULL;
            } else {
                p->next = head->next;
                head->next = p;
            }
        } else {
            return head;
        }
    }
}

// 主函数
int main() {
    struct student *head;
    head = init();
    head = insert(head);
    return 0;
}