为什么这个替换学生信息函数实现不了

Question

void replace_student() { int choice = 0; // 记录用户的选择，0表示通过姓名查询，1表示通过学号查询 int continue_search = 1; // 控制循环的变量，1表示继续查询，0表示退出查询 while (continue_search) { printf("请选择查询方式：\n"); printf("输入0. 通过学生姓名查询\n"); printf("输入1. 通过学生学号查询\n"); scanf("%d", &choice); switch (choice) { case 0: { char newname[50]; int newnum[50]; int newphone[50]; printf("请输入要查找的学生姓名："); scanf("%s", newname); struct Student *current = head; while (current != NULL) { if (strcmp(current->name, newname) == 0) { printf("请输入新的学生学号："); scanf("%d", newnum); printf("请输入新的学生电话："); scanf("%d", &newphone); current->num = newnum; current->phone = newphone; printf("学生信息已成功替换！\n"); return; } else { current = current->next; } } printf("未找到该学生信息！\n"); } break; case 1: { char newname[50]; int newnum[50]; int newphone[50]; printf("请输入要查找的学生学号："); scanf("%d", &newnum); struct Student *current = head; while (current != NULL) { if (current->num == newnum) { printf("请输入新的学生姓名："); scanf("%s", newname); printf("请输入新的学生电话："); scanf("%d", &newphone); strcpy(current->name,newname); current->phone = newphone; printf("学生信息已成功替换！\n"); return; return; } else { current = current->next; } } printf("未找到该学生信息！\n"); } break; default: printf("输入有误，请重新选择！\n"); break; } // 询问用户是否继续查询，输入0退出，输入1继续 printf("是否继续查询学生信息？输入0退出，输入1继续：\n"); scanf("%d", &continue_search); }}

Answer 1

newnum和newphone被声明为数组（int newnum[50] 和 int newphone[50]），但它们应该是单个整数值。应该将它们声明为普通的 int 变量

void replace_student() {
    int choice = 0;
    int continue_search = 1;

    while (continue_search) {
        printf("请选择查询方式：\n");
        printf("输入0. 通过学生姓名查询\n");
        printf("输入1. 通过学生学号查询\n");
        scanf("%d", &choice);

        switch (choice) {
            case 0: {
                char newname[50];
                int newnum;
                int newphone;
                printf("请输入要查找的学生姓名：");
                scanf("%s", newname);
                struct Student *current = head;

                while (current != NULL) {
                    if (strcmp(current->name, newname) == 0) {
                        printf("请输入新的学生学号：");
                        scanf("%d", &newnum);
                        printf("请输入新的学生电话：");
                        scanf("%d", &newphone);
                        current->num = newnum;
                        current->phone = newphone;
                        printf("学生信息已成功替换！\n");
                        return;
                    } else {
                        current = current->next;
                    }
                }
                printf("未找到该学生信息！\n");
                break;
            }
            case 1: {
                char newname[50];
                int newnum;
                int newphone;
                printf("请输入要查找的学生学号：");
                scanf("%d", &newnum);
                struct Student *current = head;

                while (current != NULL) {
                    if (current->num == newnum) {
                        printf("请输入新的学生姓名：");
                        scanf("%s", newname);
                        printf("请输入新的学生电话：");
                        scanf("%d", &newphone);
                        strcpy(current->name, newname);
                        current->phone = newphone;
                        printf("学生信息已成功替换！\n");
                        return;
                    } else {
                        current = current->next;
                    }
                }
                printf("未找到该学生信息！\n");
                break;
            }
            default:
                printf("输入有误，请重新选择！\n");
                break;
        }

        printf("是否继续查询学生信息？输入0退出，输入1继续：\n");
        scanf("%d", &continue_search);
    }
}

请确保你的Student结构体定义和head指针已经正确声明和初始化