From b170ba60a33fe64999a2fd9ece3f7e1e13e6b4f4 Mon Sep 17 00:00:00 2001
From: Tingyu Meng <29924168887@qq.com>
Date: Sat, 22 Apr 2023 18:21:04 +0800
Subject: [PATCH] mty.

---
 mty.md | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 mty.md

diff --git a/mty.md b/mty.md
new file mode 100644
index 0000000..3109974
--- /dev/null
+++ b/mty.md
@@ -0,0 +1,119 @@
+
+//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)
+
+//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)
+
+//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)
+
+//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 
+		}
+	}
+}
+
+// 5使数据按升序排序 
+int Ascending(float a, float b)
+
+// 6使数据按降序排序 
+int Descending(float a, float b)
+
+// 7交换两个单精度浮点型数据 
+void  SwapFloat(float *x, float *y)
+
+// 8交换两个长整型数据 
+void  SwapLong(long *x, long *y)
+{
+long   temp;
+temp = *x; 
+*x = *y;  
+*y = temp;
+}
+// 交换两个字符串 
+void  SwapChar(char x[], char y[])
+{
+char temp[MAX_LEN];
+strcpy(temp, x);
+strcpy(x, y);
+strcpy(y, temp);
+}
+
+// 9交换两个字符串 
+void  SwapChar(char x[], char y[])
+
+// 10函数功能：按选择法将数组num的元素值按从低到高排序 
+
+// 11函数功能：交换法实现字符串按字典顺序排序 
+void SortbyName(STU stu[], int n, int m)
+
+// 12函数功能：按学号查找学生成绩并显示查找结果 
+void SearchbyNum(STU stu[], int n, int m)
+{
+	long  number;
+	int   i, j;
+	printf("Input the number you want to search:");
+	scanf("%ld", &number);
+    
+    /* ---------- begain ---------- */
+	
+    /* ----------- end ----------- */
+	
+	printf("\nNot found!\n");
+}
+
+// 13函数功能：按姓名的字典顺序排出成绩表 
+void SearchbyName(STU stu[], int n, int m)
+
+// 14函数功能：统计各分数段的学生人数及所占的百分比 
+void StatisticAnalysis(STU stu[], int n, int m)
+
+// 15函数功能： 打印学生成绩 
+
+// 16输出n个学生的学号、姓名及m门课程的成绩到文件student.txt中 
+void WritetoFile(STU stu[], int n, int m)
+{
+	FILE *fp;
+	int i, j;
+     
+	if ((fp = fopen("student.txt","w")) == NULL) 
+	{ 
+		printf("Failure to open score.txt!\n");
+		exit(0);
+	}
+fprintf(fp, "%d\t%d\n", n, m);    //将学生人数和课程门数写入文件
+	for (i=0; i<n; i++)
+	{
+		fprintf(fp, "%10ld%10s", stu[i].num, stu[i].name);
+		for (j=0; j<m; j++)
+		{
+			fprintf(fp, "%10.0f", stu[i].score[j]);
+		}
+		fprintf(fp, "%10.0f%10.0f\n", stu[i].sum, stu[i].aver);
+	}
+	fclose(fp);
+}
+
+
+//17从文件中读取学生的学号、姓名及成绩等信息写入到结构体数组stu中
+void ReadfromFile(STU stu[],int *n, int *m)
\ No newline at end of file