帮我修改这段代码让它能够删除所有符合要求的学生信息 void Delete_score(Student* header) { char major[20] = { 0 }; printf("输入要删除的学生所在专业\n"); rewind(stdin);//作用用于清楚缓存区 gets_s(major); int subject = 0; int class_ = 0; printf("要删除的班级： "); scanf_s("%d",&class_); while (1) { printf("输入要查找的课程序号\n"); scanf_s("%d", &subject); subject--; if (subject == 0 || subject == 1 || subject == 2) { break; } } printf("输入要求小于的分数段\n"); int score = 0; scanf_s("%d", &score); Student * pre = header; Student * pcurrent = pre->next; Student* tmp = NULL; while(pcurrent != NULL){ if ((pcurrent->class_ == class_) && strcmp(pcurrent->major, major) == 0 && subject == 0 && pcurrent->score[0] < score) { pre->next = pcurrent->next; printf("%s节点被销毁\n ", pcurrent->id); tmp = pcurrent; //释放删除节点 free(tmp); } if ((pcurrent->class_ == class_) && strcmp(pcurrent->major, major) == 0 && subject == 1 && pcurrent->score[1] < score) { pre->next = pcurrent->next; printf("%s节点被销毁\n ", pcurrent->id); //释放删除节点 free(pcurrent); } if ((pcurrent->class_ == class_) && strcmp(pcurrent->major, major) == 0 && subject == 2 && pcurrent->score[2] < score) { pre->next = pcurrent->next; printf("%s节点被销毁\n ", pcurrent->id); //释放删除节点 free(pcurrent); } pre = pcurrent; pcurrent = pcurrent->next; } if (pcurrent == NULL) { return; } }

以下是修改后的代码：

void Delete_score(Student* header) {
	char major[20] = { 0 };
	printf("输入要删除的学生所在专业\n");
	rewind(stdin);//作用用于清楚缓存区
	gets_s(major);
	int subject = 0;
	int class_ = 0;
	printf("要删除的班级： ");
	scanf_s("%d", &class_);
	while (1) {
		printf("输入要查找的课程序号\n");
		scanf_s("%d", &subject);
		subject--;

		if (subject == 0 || subject == 1 || subject == 2) {
			break;
		}
	}
	printf("输入要求小于的分数段\n");
	int score = 0;
	scanf_s("%d", &score);

	Student* pre = header;
	Student* pcurrent = pre->next;
	Student* tmp = NULL;
	while (pcurrent != NULL) {
		if ((pcurrent->class_ == class_) && strcmp(pcurrent->major, major) == 0) {
			if (subject == 0 && pcurrent->score[0] < score) {
				pre->next = pcurrent->next;
				printf("%s节点被销毁\n ", pcurrent->id);
				tmp = pcurrent;
				//释放删除节点
				free(tmp);
			}
			else if (subject == 1 && pcurrent->score[1] < score) {
				pre->next = pcurrent->next;
				printf("%s节点被销毁\n ", pcurrent->id);
				//释放删除节点
				free(pcurrent);
			}
			else if (subject == 2 && pcurrent->score[2] < score) {
				pre->next = pcurrent->next;
				printf("%s节点被销毁\n ", pcurrent->id);
				//释放删除节点
				free(pcurrent);
			}
		}

		pre = pcurrent;
		pcurrent = pcurrent->next;
	}
	if (pcurrent == NULL) {
		return;
	}
}

这个修改后的代码会删除所有符合要求的学生信息。首先，根据用户输入的专业和班级筛选出需要删除的学生。然后，根据用户输入的课程序号和分数段判断是否满足删除条件。如果满足条件，则将对应的学生节点从链表中删除，并释放相关内存空间。最后，返回删除操作是否成功。