db.c

linux平台下用C开发的一个超市管理系统（结合了ORACLE数据库）

 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.stmt = "drop user pos cascade";
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )36;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
}


	/* EXEC SQL CREATE USER pos identified by pos; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 4;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.stmt = "create USER pos identified by pos";
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )51;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
}


	/* EXEC SQL grant resource,create table,connect to pos; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 4;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.stmt = "grant resource , create table , connect to pos";
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )66;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
}


	
}

/*******************************************************************
功能:连接数据库
参数:数据库ID，密码
返回值:0成功 非0失败
*******************************************************************/
int ConnectDB(char* userID,char* passwd)
{
	/* EXEC SQL WHENEVER SQLERROR GOTO connect_error; */ 

	/* EXEC SQL CONNECT:userID IDENTIFIED BY:passwd; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 4;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.iters = (unsigned int  )10;
 sqlstm.offset = (unsigned int  )81;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlstm.sqhstv[0] = (         void  *)userID;
 sqlstm.sqhstl[0] = (unsigned int  )0;
 sqlstm.sqhsts[0] = (         int  )0;
 sqlstm.sqindv[0] = (         void  *)0;
 sqlstm.sqinds[0] = (         int  )0;
 sqlstm.sqharm[0] = (unsigned int  )0;
 sqlstm.sqadto[0] = (unsigned short )0;
 sqlstm.sqtdso[0] = (unsigned short )0;
 sqlstm.sqhstv[1] = (         void  *)passwd;
 sqlstm.sqhstl[1] = (unsigned int  )0;
 sqlstm.sqhsts[1] = (         int  )0;
 sqlstm.sqindv[1] = (         void  *)0;
 sqlstm.sqinds[1] = (         int  )0;
 sqlstm.sqharm[1] = (unsigned int  )0;
 sqlstm.sqadto[1] = (unsigned short )0;
 sqlstm.sqtdso[1] = (unsigned short )0;
 sqlstm.sqphsv = sqlstm.sqhstv;
 sqlstm.sqphsl = sqlstm.sqhstl;
 sqlstm.sqphss = sqlstm.sqhsts;
 sqlstm.sqpind = sqlstm.sqindv;
 sqlstm.sqpins = sqlstm.sqinds;
 sqlstm.sqparm = sqlstm.sqharm;
 sqlstm.sqparc = sqlstm.sqharc;
 sqlstm.sqpadto = sqlstm.sqadto;
 sqlstm.sqptdso = sqlstm.sqtdso;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
 if (sqlca.sqlcode < 0) goto connect_error;
}


	return 0;
connect_error:
	/* EXEC SQL WHENEVER SQLERROR CONTINUE; */ 

	/* EXEC SQL ROLLBACK RELEASE; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 4;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )112;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
}

	
	return -1;
}
/*******************************************************************
功能:断开数据库
参数:数据库ID，密码
返回值:0成功 非0失败
*******************************************************************/
int DisconnectDB()
{
	/* EXEC SQL COMMIT WORK RELEASE; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 4;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )127;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
}


}
/********************************************************************
功能:查找帐户是否存在
参数:帐户表结构体，帐户名与密码
返回值:0成功 非0失败
*********************************************************************/
int get_account(STAFFS *staff,char * staff_id)
{
	
	/* EXEC SQL WHENEVER SQLERROR GOTO error; */ 

	/* EXEC SQL WHENEVER NOT FOUND GOTO not_find; */ 

	/* EXEC SQL SELECT * into :staff
					 FROM T_Employee
					 WHERE Cashier_ID=:staff_id; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 6;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.stmt = "select * into :s1 ,:s2 ,:s3 ,:s4 ,:s5   from T_Employee whe\
re Cashier_ID=:b1";
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )142;
 sqlstm.selerr = (unsigned short)1;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlstm.sqhstv[0] = (         void  *)staff->staff_id;
 sqlstm.sqhstl[0] = (unsigned int  )7;
 sqlstm.sqhsts[0] = (         int  )0;
 sqlstm.sqindv[0] = (         void  *)0;
 sqlstm.sqinds[0] = (         int  )0;
 sqlstm.sqharm[0] = (unsigned int  )0;
 sqlstm.sqadto[0] = (unsigned short )0;
 sqlstm.sqtdso[0] = (unsigned short )0;
 sqlstm.sqhstv[1] = (         void  *)staff->staff_name;
 sqlstm.sqhstl[1] = (unsigned int  )16;
 sqlstm.sqhsts[1] = (         int  )0;
 sqlstm.sqindv[1] = (         void  *)0;
 sqlstm.sqinds[1] = (         int  )0;
 sqlstm.sqharm[1] = (unsigned int  )0;
 sqlstm.sqadto[1] = (unsigned short )0;
 sqlstm.sqtdso[1] = (unsigned short )0;
 sqlstm.sqhstv[2] = (         void  *)staff->staff_pwd;
 sqlstm.sqhstl[2] = (unsigned int  )17;
 sqlstm.sqhsts[2] = (         int  )0;
 sqlstm.sqindv[2] = (         void  *)0;
 sqlstm.sqinds[2] = (         int  )0;
 sqlstm.sqharm[2] = (unsigned int  )0;
 sqlstm.sqadto[2] = (unsigned short )0;
 sqlstm.sqtdso[2] = (unsigned short )0;
 sqlstm.sqhstv[3] = (         void  *)&staff->staff_type;
 sqlstm.sqhstl[3] = (unsigned int  )sizeof(int);
 sqlstm.sqhsts[3] = (         int  )0;
 sqlstm.sqindv[3] = (         void  *)0;
 sqlstm.sqinds[3] = (         int  )0;
 sqlstm.sqharm[3] = (unsigned int  )0;
 sqlstm.sqadto[3] = (unsigned short )0;
 sqlstm.sqtdso[3] = (unsigned short )0;
 sqlstm.sqhstv[4] = (         void  *)staff->remark;
 sqlstm.sqhstl[4] = (unsigned int  )31;
 sqlstm.sqhsts[4] = (         int  )0;
 sqlstm.sqindv[4] = (         void  *)0;
 sqlstm.sqinds[4] = (         int  )0;
 sqlstm.sqharm[4] = (unsigned int  )0;
 sqlstm.sqadto[4] = (unsigned short )0;
 sqlstm.sqtdso[4] = (unsigned short )0;
 sqlstm.sqhstv[5] = (         void  *)staff_id;
 sqlstm.sqhstl[5] = (unsigned int  )0;
 sqlstm.sqhsts[5] = (         int  )0;
 sqlstm.sqindv[5] = (         void  *)0;
 sqlstm.sqinds[5] = (         int  )0;
 sqlstm.sqharm[5] = (unsigned int  )0;
 sqlstm.sqadto[5] = (unsigned short )0;
 sqlstm.sqtdso[5] = (unsigned short )0;
 sqlstm.sqphsv = sqlstm.sqhstv;
 sqlstm.sqphsl = sqlstm.sqhstl;
 sqlstm.sqphss = sqlstm.sqhsts;
 sqlstm.sqpind = sqlstm.sqindv;
 sqlstm.sqpins = sqlstm.sqinds;
 sqlstm.sqparm = sqlstm.sqharm;
 sqlstm.sqparc = sqlstm.sqharc;
 sqlstm.sqpadto = sqlstm.sqadto;
 sqlstm.sqptdso = sqlstm.sqtdso;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
 if (sqlca.sqlcode == 1403) goto not_find;
 if (sqlca.sqlcode < 0) goto error;
}


	return 0;
error:
	/* EXEC SQL WHENEVER SQLERROR CONTINUE; */ 

	/* EXEC SQL ROLLBACK ; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 6;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )181;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
}

	
	return -1;
not_find:
	return 1;	

}
/**********************************************************************
功能:验证登陆
参数:帐户表结构体，帐户名与密码
返回值:0成功 非0失败
***********************************************************************/
int LoginDB(STAFFS *staff,char* staff_id,char* staff_pwd)
{

	/* EXEC SQL WHENEVER SQLERROR GOTO error; */ 

	/* EXEC SQL WHENEVER NOT FOUND GOTO not_find; */ 

	/* EXEC SQL SELECT * into :staff
					 FROM T_Employee
					 WHERE Cashier_ID=:staff_id and Passwd=:staff_pwd; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 7;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.stmt = "select * into :s1 ,:s2 ,:s3 ,:s4 ,:s5   from T_Employee whe\
re (Cashier_ID=:b1 and Passwd=:b2)";
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )196;
 sqlstm.selerr = (unsigned short)1;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlstm.sqhstv[0] = (         void  *)staff->staff_id;
 sqlstm.sqhstl[0] = (unsigned int  )7;
 sqlstm.sqhsts[0] = (         int  )0;
 sqlstm.sqindv[0] = (         void  *)0;
 sqlstm.sqinds[0] = (         int  )0;
 sqlstm.sqharm[0] = (unsigned int  )0;
 sqlstm.sqadto[0] = (unsigned short )0;
 sqlstm.sqtdso[0] = (unsigned short )0;
 sqlstm.sqhstv[1] = (         void  *)staff->staff_name;
 sqlstm.sqhstl[1] = (unsigned int  )16;
 sqlstm.sqhsts[1] = (         int  )0;
 sqlstm.sqindv[1] = (         void  *)0;
 sqlstm.sqinds[1] = (         int  )0;
 sqlstm.sqharm[1] = (unsigned int  )0;
 sqlstm.sqadto[1] = (unsigned short )0;
 sqlstm.sqtdso[1] = (unsigned short )0;
 sqlstm.sqhstv[2] = (         void  *)staff->staff_pwd;
 sqlstm.sqhstl[2] = (unsigned int  )17;
 sqlstm.sqhsts[2] = (         int  )0;
 sqlstm.sqindv[2] = (         void  *)0;
 sqlstm.sqinds[2] = (         int  )0;
 sqlstm.sqharm[2] = (unsigned int  )0;
 sqlstm.sqadto[2] = (unsigned short )0;
 sqlstm.sqtdso[2] = (unsigned short )0;
 sqlstm.sqhstv[3] = (         void  *)&staff->staff_type;
 sqlstm.sqhstl[3] = (unsigned int  )sizeof(int);
 sqlstm.sqhsts[3] = (         int  )0;
 sqlstm.sqindv[3] = (         void  *)0;
 sqlstm.sqinds[3] = (         int  )0;
 sqlstm.sqharm[3] = (unsigned int  )0;
 sqlstm.sqadto[3] = (unsigned short )0;
 sqlstm.sqtdso[3] = (unsigned short )0;
 sqlstm.sqhstv[4] = (         void  *)staff->remark;
 sqlstm.sqhstl[4] = (unsigned int  )31;
 sqlstm.sqhsts[4] = (         int  )0;
 sqlstm.sqindv[4] = (         void  *)0;
 sqlstm.sqinds[4] = (         int  )0;
 sqlstm.sqharm[4] = (unsigned int  )0;
 sqlstm.sqadto[4] = (unsigned short )0;
 sqlstm.sqtdso[4] = (unsigned short )0;
 sqlstm.sqhstv[5] = (         void  *)staff_id;
 sqlstm.sqhstl[5] = (unsigned int  )0;
 sqlstm.sqhsts[5] = (         int  )0;
 sqlstm.sqindv[5] = (         void  *)0;
 sqlstm.sqinds[5] = (         int  )0;
 sqlstm.sqharm[5] = (unsigned int  )0;
 sqlstm.sqadto[5] = (unsigned short )0;
 sqlstm.sqtdso[5] = (unsigned short )0;
 sqlstm.sqhstv[6] = (         void  *)staff_pwd;
 sqlstm.sqhstl[6] = (unsigned int  )0;
 sqlstm.sqhsts[6] = (         int  )0;
 sqlstm.sqindv[6] = (         void  *)0;
 sqlstm.sqinds[6] = (         int  )0;
 sqlstm.sqharm[6] = (unsigned int  )0;
 sqlstm.sqadto[6] = (unsigned short )0;
 sqlstm.sqtdso[6] = (unsigned short )0;
 sqlstm.sqphsv = sqlstm.sqhstv;
 sqlstm.sqphsl = sqlstm.sqhstl;
 sqlstm.sqphss = sqlstm.sqhsts;
 sqlstm.sqpind = sqlstm.sqindv;
 sqlstm.sqpins = sqlstm.sqinds;
 sqlstm.sqparm = sqlstm.sqharm;
 sqlstm.sqparc = sqlstm.sqharc;
 sqlstm.sqpadto = sqlstm.sqadto;
 sqlstm.sqptdso = sqlstm.sqtdso;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
 if (sqlca.sqlcode == 1403) goto not_find;
 if (sqlca.sqlcode < 0) goto error;
}


	return 0;
error:
	/* EXEC SQL WHENEVER SQLERROR CONTINUE; */ 

	/* EXEC SQL ROLLBACK ; */ 

{
 struct sqlexd sqlstm;
 sqlstm.sqlvsn = 10;
 sqlstm.arrsiz = 7;
 sqlstm.sqladtp = &sqladt;
 sqlstm.sqltdsp = &sqltds;
 sqlstm.iters = (unsigned int  )1;
 sqlstm.offset = (unsigned int  )239;
 sqlstm.cud = sqlcud0;
 sqlstm.sqlest = (unsigned char  *)&sqlca;
 sqlstm.sqlety = (unsigned short)256;
 sqlstm.occurs = (unsigned int  )0;
 sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
}


	printf("code=%d,str=%s\n",sqlca.sqlcode,sqlca.sqlerrm.sqlerrmc);
	/*Err_Log(sqlca.sqlerrm.sqlerrmc);*/
	return -1;
not_find:
	return 1;
}
/**********************************************************************
功能:通过销售ID获取商品信息
参数:链表，ID
返回值:0成功 非0失败