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xuejixitong-lianbiao.c

@@ -0,0 +1,151 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct Student {
+    char id[20];
+    char classname[20];
+    char name[20];
+    float score1, score2, score3;
+    struct Student* next;
+} Student;
+
+Student* head = NULL; // 头节点指针
+
+void showMenu() {
+    printf("%30s1. input\n", " ");
+    printf("%30s2. delete\n", " ");
+    printf("%30s3. select\n", " ");
+    printf("%30s4. order\n", " ");
+    printf("%30s5. output\n", " ");
+    printf("%30s6. quit\n", " ");
+    printf("%30splease input your option\n", " ");
+}
+
+void insertStudent() {
+    Student* newStudent = (Student*)malloc(sizeof(Student));
+    printf("ID: ");
+    scanf("%s", newStudent->id);
+    printf("class: ");
+    scanf("%s", newStudent->class);
+    printf("name: ");
+    scanf("%s", newStudent->name);
+    printf("score1: ");
+    scanf("%f", &newStudent->score1);
+    printf("score2: ");
+    scanf("%f", &newStudent->score2);
+    printf("score3: ");
+    scanf("%f", &newStudent->score3);
+    newStudent->next = head;
+    head = newStudent;
+}
+
+void deleteStudent() {
+    char idOrName[20];
+    scanf("%s", idOrName);
+    Student* current = head;
+    Student* prev = NULL;
+    while (current != NULL) {
+        if (strcmp(current->id, idOrName) == 0 || strcmp(current->name, idOrName) == 0) {
+            if (prev == NULL) {
+                head = current->next;
+            } else {
+                prev->next = current->next;
+            }
+            free(current);
+            break;
+        }
+        prev = current;
+        current = current->next;
+    }
+    printStudent();
+}
+
+void selectStudent() {
+    char idOrName[20];
+    scanf("%s", idOrName);
+    Student* current = head;
+    int found = 0;
+    while (current != NULL) {
+        if (strcmp(current->id, idOrName) == 0 || strcmp(current->name, idOrName) == 0) {
+            printf("%s %s %s %.1f %.1f %.1f\n", current->id, current->class, current->name, current->score1, current->score2, current->score3);
+            found = 1;
+        }
+        current = current->next;
+    }
+    if (found == 0) {
+        printf("There is no eligible student\n");
+    }
+}
+
+void orderStudent() {
+    // 省略排序功能的具体实现
+}
+
+void printStudent() {
+    Student* current = head;
+    while (current != NULL) {
+        printf("%s %s %s %.1f %.1f %.1f\n", current->id, current->class, current->name, current->score1, current->score2, current->score3);
+        current = current->next;
+    }
+}
+
+int main() {
+    int choice;
+    char a[4];
+    while (1) {
+        showMenu();
+        scanf("%d", &choice);
+        switch (choice) {
+            case 1:
+                insertStudent();
+                while (1) {
+                    printf("Continue?\n");
+                    scanf("%s", &a);
+                    if (strcmp(a, "yes") == 0) {
+                        insertStudent();
+                        continue;
+                    } else {
+                        break;
+                    }
+                }
+                break;
+            case 2:
+                deleteStudent();
+                while (1) {
+                    printf("Continue?\n");
+                    scanf("%s", &a);
+                    if (strcmp(a, "yes") == 0) {
+                        deleteStudent();
+                        continue;
+                    } else {
+                        break;
+                    }
+                }
+                break;
+            case 3:
+                selectStudent();
+                while (1) {
+                    printf("Continue?\n");
+                    scanf("%s", &a);
+                    if (strcmp(a, "yes") == 0) {
+                        selectStudent();
+                        continue;
+                    } else {
+                        break;
+                    }
+                }
+                break;
+            case 4:
+                orderStudent();
+                break;
+            case 5:
+                printStudent();
+                break;
+            case 6:
+                return 0;
+        }
+    }
+}
+
+