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76 lines
2.1 KiB
76 lines
2.1 KiB
6 days ago
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#define MAX_STUDENTS 100
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#define NAME_LEN 50
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typedef struct {
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char id[10];
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int classs;
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char name[NAME_LEN];
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float scores[3];
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} Student;
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Student students[MAX_STUDENTS] = {
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{"10001", 11, "Zhang", {99.5, 88.5, 89.5}},
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{"10002", 12, "Yang", {77.9, 56.5, 87.5}},
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{"10003", 11, "Liang", {92.5, 99.0, 60.5}}
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};
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int student_count = 3;
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int compare_students(const void *a, const void *b) {
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Student *student_a = (Student *)a;
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Student *student_b = (Student *)b;
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if (student_a->classs != student_b->classs) {
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return student_a->classs - student_b->classs;
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}
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float total_a = student_a->scores[0] + student_a->scores[1] + student_a->scores[2];
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float total_b = student_b->scores[0] + student_b->scores[1] + student_b->scores[2];
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return total_b - total_a;
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}
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int find_student(char *key) {
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int i;for ( i = 0; i < student_count; i++) {
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if (strcmp(students[i].id, key) == 0 || strcmp(students[i].name, key) == 0) {
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return i;
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}
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}
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return -1;
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}
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void delete_student(int index) {
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int i ;for ( i = index; i < student_count - 1; i++) {
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students[i] = students[i + 1];
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}
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student_count--;
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}
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void display_students() {
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qsort(students, student_count, sizeof(Student), compare_students);
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int i;for (i = 0; i < student_count; i++) {
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printf("%s %d %s %.1f %.1f %.1f\n", students[i].id, students[i].classs, students[i].name,
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students[i].scores[0], students[i].scores[1], students[i].scores[2]);
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}
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}
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int main() {
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char key[NAME_LEN];
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printf("Enter the student ID or name to delete: ");
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scanf("%s", key);
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int index = find_student(key);
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if (index == -1) {
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printf("Student not found.\n");
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display_students();
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return 0;
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}
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printf("Are you sure (yes/no)? ");
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char confirm[5];
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scanf("%s", confirm);
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if (strcmp(confirm, "yes") == 0) {
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delete_student(index);
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display_students();
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} else {
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display_students();
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}
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return 0;
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}
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