Question : memory

Consider the following application in C/C++

......
......
for (i = 0 1 < 10; i++ )
{
char str = (char )malloc(sizeof(char) * 1024 * 1024);
..... // some lines of code...
.....
free(str);
}
.......
.......

While the application is running inside the for loop, it allocates 1 MB of data and free it at the end of loop.
Once the control is out of for loop, the memory that was allocated and freed, is that memory re-usable by any other later malloc. Or does it create memory fragment and it is unused during the rest of the execution.

Answer : memory

                       
         
           
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             CREATE VIEW TestView
AS
with CTE as (
	SELECT  GCT.GiftCertificateTypeName, 
		DATEPART(day, GCH.GiftHistDateAdded) AS [day], 
		DATEPART(month, GCH.GiftHistDateAdded) AS [month], 
		DATEPART(year, GCH.GiftHistDateAdded) AS [year],
		case when b.GiftCodeID is null then 'New Laird Or Lady' else 'Old Laird or Lady' end as SideName
 
	FROM	dbo.GiftCertificateHistory AS GCH INNER JOIN
                      dbo.GiftCertificate AS GC ON GCH.GiftCodeID = GC.GiftCodeID INNER JOIN
                      dbo.GiftCertificateType AS GCT ON GC.GiftCertificateTypeID = GCT.GiftCertificateTypeID  
	left join (
		SELECT GiftCodeID from GiftCertificateHistory Where STATUSID='CODE_CREATED' AND GIFTHISTDATEADDED <='2010-05-20'
	) b on GCH.GiftCodeID = b.GiftCodeID

	WHERE     (GCH.StatusID = 'CERT_SENT')  AND 
        	  (GCH.GiftCodeID LIKE 'LAIRD%') AND
		(GCH.GiftHistDateAdded >= DATEADD(dd, - 6, CAST(CONVERT(VARCHAR(10), GETDATE(), 120) AS DATETIME))) AND 
		(GCH.GiftHistDateAdded < GETDATE())
)
select 	GiftCertificateTypeName, 
	[day],
	[month],
	[year],
	SideName,	
	count(GiftCertificateTypeName) as NumCertsSent
from CTE
group by	GiftCertificateTypeName, 
		[day],
		[month],
		[year],
		SideName

           
         