VC++Á¬½ÓSQLServer
VC++Á¬½ÓSQLServer
/*
*Á¬½ÓSQL
*/
void CMFCSQLDlg::OnButton3()
{
// TODO: Add your control notification handler code here
_ConnectionPtr m_pConnection;
// ÔÚÓ¦ÓóÌÐòµÄInitInstanceº¯ÊýÀï¼ÓÈë
if(S_OK!=CoInitialize(NULL))
{
AfxMessageBox("³õʼ»¯COM¿â´íÎó!");
}else
{
AfxMessageBox("³õʼ»¯COM¿â³É¹¦!");
}
// Á¬½ÓÊý¾Ý¿â£º
HRESULT hr; //·µ»Ø½á¹û±äÁ¿
try
{
hr=m_pConnection.CreateInstance("ADODB.Connection"); //´´½¨Connection¶ÔÏó
if(SUCCEEDED(hr))
{
//hr=m_pConnection->Open("Provider=SQLOLEDB;Server=808644DA83B446C\SQLEXPRESS;Database=ChinabaseSQLServer;UserID=sa;pwd=123","","",adModeUnknown); //;Integrated Security=SSPI
m_pConnection->Open("Provider=SQLOLEDB.1;Server=808644DA83B446C\\SQLEXPRESS;DATABASE=ChinabaseSQLServer;UID=sa;PWD=123;","","",adModeUnknown);
MessageBox("Á¬½ÓSQLÔËÐгɹ¦!","³É¹¦",MB_OK);
_CommandPtr m_pCommand;
_RecordsetPtr m_pRecordset;
m_pCommand.CreateInstance("ADODB.Command");
_variant_t vNULL;
vNULL.vt = VT_ERROR;
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long longµÄ×î´óÖµ£º9223372036854775807
long longµÄ×îСֵ£º-9223372036854775808
unsigned long longµÄ×î´óÖµ£º1844674407370955161
__int64µÄ×î´óÖµ£º9223372036854775807
__int64µÄ×îСֵ£º-9223372036854775808
unsigned __int64µÄ×î´óÖµ£º18446744073709551615
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int func(x)
{
int countx = 0;
while(x)
{
countx ++;
x = x&(x-1);
}
......
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