From b20170da3a33e1a9171ea1f3958604ebe82067b2 Mon Sep 17 00:00:00 2001
From: tong tong zhang <tong521-2002@qq.com>
Date: Sun, 21 May 2023 16:37:27 +0800
Subject: [PATCH] 8

---
 src | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/src b/src
index a2e2870..ca8d099 100644
--- a/src
+++ b/src
@@ -107,3 +107,71 @@ int Menu(void)
         scanf("%d", &itemSelected);     // 读入用户输入 
         return itemSelected;
 }
+//1 函数功能：输入n个学生的m门课成绩 
+void ReadScore(STU stu[], int n, int m)
+{
+    int i, j;
+    printf("Input student's ID, name and score:\n");
+    for(i=0;i<n;i++)
+    {scanf("%ld%s",&stu[i].num,stu[i].name);
+     for (j=0; j<m; j++)
+     scanf("%f",&stu[i].score[j]);
+    }
+}
+//2 函数功能：计算每个学生各门课程的总分和平均分 
+void AverSumofEveryStudent(STU stu[], int n, int m)
+{
+    int i, j;
+    for (i=0; i<n; i++)
+    {
+        stu[i].sum = 0;
+        for (j=0; j<m; j++)
+        {
+            stu[i].sum = stu[i].sum + stu[i].score[j];
+        }
+        stu[i].aver = m>0 ? stu[i].sum / m : -1;
+        printf("student %d: sum = %.0f, aver = %.0f\n", 
+i+1, stu[i].sum, stu[i].aver);
+    }    
+}
+//3 函数功能：计算每门课程的总分和平均分 
+void  AverSumofEveryCourse(STU stu[], int n, int m)
+{
+    int i, j;
+    float sum[COURSE_NUM], aver[COURSE_NUM];
+    for (j=0; j<m; j++)
+    {
+        sum[j] = 0;
+        for (i=0; i<n; i++)
+        {
+            sum[j] +=  stu[i].score[j];
+        }
+        aver[j]=sum[j]/i;
+        printf("student %d: sum = %.0f, aver = %.0f\n", 
+j+1, sum[j], aver[j]); 
+    }
+}
+//4 函数功能：按选择法将数组sum的元素值排序 
+void SortbyScore(STU stu[],int n,int m,int (*compare)(float a,float b))
+{
+    int  i, j, k, t;
+    for (i=0; i<n-1; i++)
+    {
+        k = i;
+        for (j=i+1; j<n; j++)
+        {
+            if ((*compare)(stu[j].sum, stu[k].sum)) k = j;
+        }
+        if (k != i)
+        {           
+           for (t=0; t<m; t++)             // 交换m门课程的成绩 
+            {
+                SwapFloat(&stu[k].score[t], &stu[i].score[t]);
+            }
+SwapFloat(&stu[k].sum, &stu[i].sum);    // 交换总分 
+SwapFloat(&stu[k].aver, &stu[i].aver); // 交换平均分   
+SwapLong(&stu[k].num, &stu[i].num);     // 交换学号 
+SwapChar(stu[k].name, stu[i].name);     // 交换姓名 
+        }
+    }
+}
\ No newline at end of file