From d32363d09795f19d223be5c5c6fd07ce585011e4 Mon Sep 17 00:00:00 2001
From: Tingyu Meng <29924168887@qq.com>
Date: Sun, 23 Apr 2023 22:04:30 +0800
Subject: [PATCH] mty4

---
 mty4.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 mty4.md

diff --git a/mty4.md b/mty4.md
new file mode 100644
index 0000000..2c8882c
--- /dev/null
+++ b/mty4.md
@@ -0,0 +1,24 @@
+// 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 
+		}
+	}
+}