20230717

      

		return -1;
	}
	for(int i=0;i<list->len;i++)		
	{
		if(list->data[i] = value);
		{
			list->data[i] = ever;
			return 0;
		}
	}
	printf("not found\n");
	return 0;
}
//ever 删除
int ever_shanchu(int sub,Seqlist *list)
{
	if(NULL == list || empty(list) || sub<0 || sub >= list->len)
	{
		printf("error!");
		return -1;
	}
	for(int i=sub;i<list->len-1;i++)		
	{
		list->data[i] = list->data[i+1];
	}
	list->len--;
	return 0;
}

//ever 查找
int ever_chazhao(datatype ever,Seqlist *list)
{
	if(NULL == list || empty(list)) 	
	{
		printf("error!");
		return -1;
	}
	for(int i=0;i<list->len;i++)		
	{
		if(ever == list->data[i]);
		return i;
	}
	printf("not found\n");
	return -1;
}
----------------------------------------------------------------
		//查ever元素
	printf("please element\n");
	scanf("%d",&ever);
	chaa_list(ever,list);
	output(list);
		//删除ever元素
	printf("please element\n");
	scanf("%d",&sub);
	chaa_list(sub,list);
	output(list);
	//按下标修改
	printf("please updata sub:\n");
	scanf("%d",&value);
	printf("please updata element\n");
	scanf("%d",&ever);
	modify_list(sub,ever,list);
	output(list);





	return 0;
}