#include<myhead.h>
int main(int argc, const char *argv[])
{
	int workid = 0;
	char name[20] = "";
	double salary = 0;

	sqlite3 *ppDb = NULL;//数据库句柄指针
	//打开数据库，如果数据库不存在，则创建数据库
	//将数据库句柄由参数2返回
	if((sqlite3_open("./my.db",&ppDb) != SQLITE_OK))
	{
		printf("sqlite3_open error,errcode = %d, errmsg = %s\n",\
				sqlite3_errcode(ppDb), sqlite3_errmsg(ppDb));
		return -1;
	}

	printf("sqlite3_open success\n");
	//创建数据表
	//1、准备sql语句
	char sql[128] = "create table if not exists worker(numb int ,name char ,salary double)";
	char *errmsg = NULL;//存放执行sql语句的错误信息
	if(sqlite3_exec(ppDb, sql,NULL, NULL, &errmsg) != SQLITE_OK)
	{
		printf("exec error :%s\n",errmsg);
		sqlite3_free(errmsg);//防止内存泄露
		errmsg = NULL;
		return -1;
	}
	printf("员工信息表创建成功\n");
	int menu = -1;
	for(;;)
	{
		system("clear");
		printf("\t\t======xxx公司员工管理系统======\n");
		printf("\t\t========1、添加员工信息========\n");
		printf("\t\t========2、删除员工信息========\n");
		printf("\t\t========3、修改员工信息========\n");
		printf("\t\t========4、查询员工信息========\n");
		printf("\t\t========0、退出========\n");

		printf("请输入操作码：");
		scanf("%d",&menu);
		getchar();
		switch(menu)
		{
		case 1:
			{
				printf("请输入员工工号：");
				scanf("%d",&workid);
				printf("请输入员工名字：");
				scanf("%s",name);
				printf("请输入员工工资：");
				scanf("%lf",&salary);
				getchar();
				sscanf(sql,"insert into worker values(%d %s %lf);",&workid,name,&salary);
				if(sqlite3_exec(ppDb, sql,NULL, NULL, &errmsg) != SQLITE_OK)
				{
					printf("exec error :%s\n",errmsg);
					sqlite3_free(errmsg);//防止内存泄露
					errmsg = NULL;
					break;
				}
				printf("员工信息录入成功\n");

			}break;
		case 2:
			{	printf("请输入要删除员工工号：");
				scanf("%d",&workid);
				getchar();
				sscanf(sql,"update worker set where numb=%d;",&workid);
				if(sqlite3_exec(ppDb, sql,NULL, NULL, &errmsg) != SQLITE_OK)
				{
					printf("id不存在\n");
					printf("exec error :%s\n",errmsg);
					sqlite3_free(errmsg);//防止内存泄露
					errmsg = NULL;
					break;
				}
				printf("员工信息删除成功\n");


			}break;
		case 3:
			{

				printf("请输入要修改员工名字：");
				scanf("%s",name);
				printf("请输入员工工号：");
				scanf("%d",&workid);
				printf("请输入员工工资：");
				scanf("%lf",&salary);
				getchar();
				sscanf(sql,"delete from worker numb=%d,salary=%lf where name=%s;",&workid,&salary,name);
				if(sqlite3_exec(ppDb, sql,NULL, NULL, &errmsg) != SQLITE_OK)
				{
					printf("名字不存在\n");
					printf("exec error :%s\n",errmsg);
					sqlite3_free(errmsg);//防止内存泄露
					errmsg = NULL;
					break;
				}
				printf("员工信息修改成功\n");
			}break;
		case 4:
			{
				char sql1[50] = "select * from worker";
				char **result = NULL;
				int hang = 1;
				int lie = 3;
				if(sqlite3_get_table(ppDb, sql1,&result,&hang, &lie , &errmsg) != SQLITE_OK)
				{
					printf("exec error :%s\n",errmsg);
					sqlite3_free(errmsg);//防止内存泄露
					errmsg = NULL;
					break;
				}
				char *readresult = NULL;
				&readresult = *result;
				printf("%s\n",*readresult);
				sqlite3_free(readresult);
				readresult = NULL;
			}break;
		case 0:
			goto END;
		default:
			printf("您输入的功能有误，请重新输入！！！\n");
		}
		printf("请输入任意键，按回车清屏\n");
		while(getchar() != '\n');
	}
END:
	sqlite3_close(ppDb);

	return 0;
}