From f406c235a5c16afbce9e94225020ab42dba44ce5 Mon Sep 17 00:00:00 2001
From: pui26hfw7 <125362001@qq.com>
Date: Mon, 13 Nov 2023 22:16:46 +0800
Subject: [PATCH] ADD file via upload

---
 step8.c | 230 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 230 insertions(+)
 create mode 100644 step8.c

diff --git a/step8.c b/step8.c
new file mode 100644
index 0000000..f31cdde
--- /dev/null
+++ b/step8.c
@@ -0,0 +1,230 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+typedef struct {
+    char id[20];
+    char clas[20];
+    char name[20];
+    double score1;
+    double score2;
+    double score3;
+    double score;
+} Student;
+
+Student students[1000];
+int studentCount=0;
+
+//输入学生信息 
+void inputStudentInfo( ) {
+    printf("Id ");
+    scanf("%s", students[studentCount].id);
+    printf("Class ");
+    scanf("%s", &students[studentCount].clas);
+    printf("Name ");
+    scanf("%s", students[studentCount].name);
+    printf("Score1 ");
+    scanf("%lf", &students[studentCount].score1);
+    printf("Score2 ");
+    scanf("%lf", &students[studentCount].score2);
+    printf("Score3 ");
+    scanf("%lf", &students[studentCount].score3);
+
+    // 计算总成绩
+    students[studentCount].score = students[studentCount].score1 +
+                                        students[studentCount].score2 +
+                                        students[studentCount].score3;
+
+    studentCount++;
+}
+
+//显示信息 
+void displayAllStudents() {
+    if (studentCount == 0) {
+        printf("No students to display.\n");
+        return;
+    }
+    int i;
+    for (i=0; i < studentCount; i++) {
+        // 输出学生信息
+        printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n",
+               students[i].id, students[i].clas, students[i].name,
+               students[i].score1, students[i].score2, students[i].score3,
+               students[i].score);
+    }
+}
+
+void sortByClassAndScore() {
+    if (studentCount <= 1) {
+        // 无需排序
+        return;
+    }
+
+    // 使用简单的冒泡排序
+    int i;
+    for ( i = 0; i < studentCount - 1; i++) {
+    	int j;
+        for ( j = 0; j < studentCount - 1 - i; j++) {
+            if (atoi(students[j].clas) > atoi(students[j + 1].clas) ||
+                (atoi(students[j].clas)== atoi(students[j + 1].clas)&&
+                 students[j].score < students[j + 1].score)) {
+                // 交换学生信息
+                Student temp = students[j];
+                students[j] = students[j + 1];
+                students[j + 1] = temp;
+            }
+        }
+    }
+    for (i = 0; i < studentCount; i++) {
+        // 输出学生信息
+        printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n",
+               students[i].id, students[i].clas, students[i].name,
+               students[i].score1, students[i].score2, students[i].score3,
+               students[i].score);
+    }
+}
+
+//删除学生信息 id or name
+void deleteStudent() {
+    if (studentCount <= 1) {
+        printf("No students to delete.\n");
+        return;
+    }
+
+    char dele[20];
+    printf("Enter the ID of the student you want to delete: ");
+    scanf("%s", dele);
+
+    int i,j;
+    int found = 0;
+
+    for (i = 0; i < studentCount; i++) {
+       if ((strcmp(students[i].id, dele) == 0) || (strcmp(students[i].name, dele) == 0)) {
+            found = 1;
+            // 删除学生，将后面的学生向前移动
+            for ( j = i; j < studentCount - 1; j++) {
+                students[j] = students[j + 1];
+            }
+
+            studentCount--;
+             for ( i = 0; i < studentCount; i++) {
+        // 输出学生信息
+               printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n",
+               students[i].id, students[i].clas, students[i].name,
+               students[i].score1, students[i].score2, students[i].score3,
+               students[i].score);
+           /* printf("Student with ID %s deleted.\n", studentId);*/
+              }
+              break;
+       }
+    }
+
+    if (!found) {
+    	// 输出学生信息
+               printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n",
+               students[i].id, students[i].clas, students[i].name,
+               students[i].score1, students[i].score2, students[i].score3,
+               students[i].score);
+            /*printf("Student with ID %s not found.\n", studentId);*/
+    }
+}
+
+//查询  id or cla 
+void queryStudent() 
+{
+    if (studentCount == 0) {
+        printf("No students to query.\n");
+        return;
+    }
+
+    char quer[20];
+    printf("Enter the ID of the student you want to query: ");
+    scanf("%s", quer);
+
+    int i;
+    int found = 0;
+
+    for (i = 0; i < studentCount; i++) {
+        if (strcmp(students[i].id, quer) == 0||strcmp(students[i].clas,quer)==0) {
+            found = 1;
+            // 输出学生信息
+            printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n",
+                   students[i].id, students[i].clas, students[i].name,
+                   students[i].score1, students[i].score2, students[i].score3,
+                   students[i].score);
+        }
+    }
+
+    if (!found) {
+        printf("there is no eligible student");
+    }
+}
+
+
+
+int main()
+{
+
+    while (1) {
+        printf("1.input\n2.delete\n3.select\n4.order\n5.output\n6.quit\nplease input your option\n");
+        int option;
+        scanf("%d", &option);
+        switch(option){
+        	case 1:{
+        		while(1)
+        		{
+        			inputStudentInfo();
+        			printf("continue?\n");
+                    char ch[20];
+                    scanf("%s", ch);
+                    if (strcmp(ch, "yes") != 0) {
+                        break; // 输入no，则跳出循环
+                    }
+				}
+				break;
+			}
+			case 2:{
+				while(1)
+				{
+					deleteStudent();
+					printf("continue?\n");
+                    char ch[20];
+                    scanf("%s", ch);
+                    if (strcmp(ch, "yes") != 0) {
+                        break; // 输入no，则跳出循环
+                    }
+				}
+				break;
+			}
+			case 3:{
+				while(1)
+				{
+					queryStudent();
+					printf("continue?\n");
+                    char ch[20];
+                    scanf("%s", ch);
+                    if (strcmp(ch, "yes") != 0) {
+                        break; // 输入no，则跳出循环
+                    }
+				}
+				break;
+			}
+			case 4:{
+				if(studentCount>=3)
+				{
+					sortByClassAndScore();
+				}
+				break;
+			}
+			case 5:{
+				displayAllStudents();
+				break;
+			}
+			case 6:
+			   exit(0);	
+		}
+	}
+	return 0;
+}
+
+