From 2e0ae29fdd5d16b0c0fae3e411c908f21cc9f985 Mon Sep 17 00:00:00 2001
From: p5fohke9s <837368911@qq.com>
Date: Wed, 20 Nov 2024 17:02:33 +0800
Subject: [PATCH] ADD file via upload

---
 b6.c | 116 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 b6.c

diff --git a/b6.c b/b6.c
new file mode 100644
index 0000000..1974d45
--- /dev/null
+++ b/b6.c
@@ -0,0 +1,116 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define MAX_STUDENTS 100
+
+typedef struct Student {
+    char id[20];
+    int classNum;
+    char name[20];
+    double score1;
+    double score2;
+    double score3;
+} Student;
+
+int compare(const void *a, const void *b) {
+    Student *s1 = (Student *)a;
+    Student *s2 = (Student *)b;
+    if (s1->classNum!= s2->classNum) {
+        return s1->classNum - s2->classNum;
+    }
+    double sum1 = s1->score1 + s1->score2 + s1->score3;
+    double sum2 = s2->score1 + s2->score2 + s2->score3;
+    return (sum2 > sum1) - (sum2 < sum1);
+}
+
+int findByID(Student students[], int n, char id[]) {
+	int i;
+    for ( i = 0; i < n; i++) {
+        if (strcmp( students[i].id,id) == 0) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+void modifyStudent(Student students[], int n, char id[], int newClass, char newName[], 
+                    double newScore1, double newScore2, double newScore3) {
+    int index = findByID(students, n, id);
+    if (index!= -1) {
+        students[index].classNum = newClass;
+        strcpy(students[index].name, newName);
+        students[index].score1 = newScore1;
+        students[index].score2 = newScore2;
+        students[index].score3 = newScore3;
+    }
+}
+
+void printStudents(Student students[], int n,char inputID[]) {
+    int currentClass = -1;
+    int i;
+    for ( i = 0; i < n; i++) {
+        if (students[i].classNum!= currentClass) {
+            if (i!= 0) {
+                printf("\n");
+            }
+            currentClass = students[i].classNum;
+            printf("%d %s %s %.1lf %.1lf %.1lf", currentClass, students[i].id, students[i].name,
+                   students[i].score1, students[i].score2, students[i].score3);
+            if (i == findByID(students, n, inputID)) {
+                printf(" modified");
+            }
+            printf("\n");
+        } else {
+            printf("   %s %s %.1lf %.1lf %.1lf", students[i].id, students[i].name,
+                   students[i].score1, students[i].score2, students[i].score3);
+         if (i == findByID(students, n, inputID)) {
+                printf(" modified");}
+        printf("\n");
+    }
+}
+}
+
+int main() {
+    Student students[MAX_STUDENTS];
+    int numStudents = 3;
+
+    // ???????????
+    strcpy(students[0].id, "10001");
+    students[0].classNum = 11;
+    strcpy(students[0].name, "Zhang");
+    students[0].score1 = 99.5;
+    students[0].score2 = 88.5;
+    students[0].score3 = 89.5;
+
+    strcpy(students[1].id, "10002");
+    students[1].classNum = 12;
+    strcpy(students[1].name, "Yang");
+    students[1].score1 = 77.9;
+    students[1].score2 = 56.5;
+    students[1].score3 = 87.5;
+
+    strcpy(students[2].id, "10003");
+    students[2].classNum = 11;
+    strcpy(students[2].name, "Liang");
+    students[2].score1 = 92.5;
+    students[2].score2 = 99.0;
+    students[2].score3 = 60.5;
+
+    qsort(students, numStudents, sizeof(Student), compare);
+
+    char inputID[20];
+    int inputClass;
+    char inputName[20];
+    double inputScore1, inputScore2, inputScore3;
+    printf("please input the student 's information");
+    scanf("%s %d %s %lf %lf %lf", inputID, &inputClass, inputName, &inputScore1, &inputScore2, &inputScore3);
+
+    modifyStudent(students, numStudents, inputID, inputClass, inputName, inputScore1, inputScore2, inputScore3);
+    printStudents(students, numStudents,inputID);
+    
+    
+
+    return 0;
+}
+