#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

int count = 0;

struct student {
	char name[50];
	char sex;
	int age;
	char class[50];
}students[10];

void print() {
	if (!count) {
		puts("错误！无任何记录！\n");
		return;
	}
	for (int i = 0; i < count; i++) {
		printf("\n-----学生%d-----\n姓名：", i + 1);
		puts(students[i].name); printf("性别：");
		putchar(students[i].sex); putchar('\n');
		printf("年龄：%d\n班级：", students[i].age);
		puts(students[i].class);
		printf("--------------\n");
	}
}

void In() {
	if (count >= 10)
	{
		printf("不好意思，记录已满，无法新增\n");
	}
	else {
		printf("请输入学生姓名：");
		scanf("%s %c %d %s", students[count].name,&students[count].sex, &students[count].age, students[count].class);
		fflush(stdin);
		count++;
		puts("添加成功！目前记录：");
	}
	print();
}

void delete() {
	int num = 0;
	if (!count)
	{
		puts("错误！无任何记录！\n");
		return;
	}
	print();
	printf("输入要删除的学生序号：");
	scanf("%d", &num);
	if (num > count + 1) { printf("没有此记录！\n"); return; }
	else {
		for (int i = num - 1; i < count; i++)
		{
			for (int j = num; i < count; i++)
			{
				students[i] = students[j];
				count--;
			}
		}
	}
	puts("\n删除成功！目前记录：\n");
	print();
}

int main()
{
	int num = 1;
	while (num != 0) {
		printf("0.退出\t1.录入\t2.删除\t3.查询\n");
		printf("请输入操作序号：\n");
		scanf("%d", &num);
		switch (num) {
		case 0: num = 0; break;
		case 1:	In(); break;
		case 2: delete(); break;
		case 3: print(); break;
		}
	}
}