From 6f824da690937fb012daf7be32b22bac97617605 Mon Sep 17 00:00:00 2001
From: pq52sx6n8 <2731407373@qq.com>
Date: Wed, 21 May 2025 15:51:21 +0800
Subject: [PATCH] Update README.md

---
 README.md | 131 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 130 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index e4824f5..2e774f3 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,132 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct {
+    char num[20];     // 学号
+    char name[10];    // 姓名
+    int math_score;   // 高数成绩
+    int datastruct_score; // 数据结构成绩
+    int English_score;    // 英语成绩
+    int physics_score;    // 物理成绩
+    float average;        // 平均分
+} Student;
+
+typedef struct {
+    Student *data;
+    int length;
+} funlist;
+
+// 初始化线性表
+void initlist(funlist *l) {
+    l->data = (Student *)malloc(100 * sizeof(Student));
+    l->length = 0;
+}
+
+// 判断是否为空表
+int isempty(funlist *l) {
+    return l->length == 0;
+}
+
+// 取值
+int getelem(funlist l, int i, Student *e) {
+    if (i < 1 || i > l.length) {
+        printf("位置不合法\n");
+        return 0;
+    }
+    *e = l.data[i - 1];
+    return 1;
+}
+
+// 计算平均分
+float calculate_average(Student *s) {
+    return (s->math_score + s->datastruct_score + s->English_score + s->physics_score) / 4.0f;
+}
+
+// 打印操作
+void printlist(funlist l) {
+    int i;
+    printf("成绩表为:\n");
+    for (i = 0; i < l.length; i++) {
+        printf("学号:%s 姓名:%s 高数:%d 数据结构:%d 英语:%d 物理:%d 平均分:%.2f\n",
+               l.data[i].num, l.data[i].name, l.data[i].math_score,
+               l.data[i].datastruct_score, l.data[i].English_score,
+               l.data[i].physics_score, l.data[i].average);
+    }
+}
+
+// 查找操作（按学号查找） 
+int locateelem1(funlist l, char *num) {
+    int i;
+    for (i = 0; i < l.length; i++) {
+        if (strcmp(l.data[i].num, num) == 0)
+            return i + 1;
+    }
+    return -1;
+}
+
+// 查找操作（按姓名查找）
+int locateelem2(funlist l, char *name) {
+    int i;
+    for (i = 0; i < l.length; i++) {
+        if (strcmp(l.data[i].name, name) == 0)
+            return i + 1;
+    }
+    return -1;
+}
+
+// 删除操作
+int deleteelem(funlist *l, int i) {
+    int j;
+    if (i < 1 || i > l->length) {
+        printf("位置不合法\n");
+        return 0;
+    }
+    for (j = i; j < l->length; j++) {
+        l->data[j - 1] = l->data[j];
+    }
+    l->length--;
+    return 1;
+}
+
+// 插入操作
+int listinsert(funlist *l, int i, Student e) {
+    if (i < 1 || i > l->length + 1) {
+        printf("位置不合法\n");
+        return 0;
+    }
+    if (l->length >= 100) {
+        printf("线性表已满\n");
+        return 0;
+    }
+    int j;
+    for (j = l->length - 1; j >= i - 1; j--) {
+        l->data[j + 1] = l->data[j];
+    }
+    // 计算并保存平均分
+    e.average = calculate_average(&e);
+    l->data[i - 1] = e;
+    l->length++;
+    return 1; // 返回1表示成功
+}
+
+// 按平均分排序
+void sort_by_average(funlist *l) {
+    if (l->length <= 1) return; // 无需排序
+    
+    int i, j;
+    for (i = 0; i < l->length - 1; i++) {
+        for (j = 0; j < l->length - i - 1; j++) {
+            if (l->data[j].average < l->data[j + 1].average) {
+                Student temp = l->data[j];
+                l->data[j] = l->data[j + 1];
+                l->data[j + 1] = temp;
+            }
+        }
+    }
+    printf("学生已按平均分降序排列\n");
+}
+
 int main() {
     funlist L;
     initlist(&L); 
@@ -120,4 +249,4 @@ int main() {
     }
     
     return 0;
-}    
+}    
\ No newline at end of file