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#include<iostream>
#include<string>
#include<sql.h>
#include<sqlext.h>
using namespace std;
int main()
{
    HENV hEnv;
    HDBC hDbc;
    RETCODE rc;
    int iOut;
    char strOut[256];
    char szDSN[256] = "driver={Microsoft Access Driver (*.mdb)};dbq=[c:\\db1.mdb];";
    //dsn samples:
    //"driver={Microsoft Access Driver (*.mdb)};dbq=[f:\\db1.mdb];"
    //"driver={SQL Server};pwd={password there};Server={server name};Database={dbname there}"
    //driver names for different databases:
    //{SQL Server}
    //{Microsoft ODBC for Oracle}
    //{Oracle in oracle9}
    //{Microsoft Access Driver (*.mdb)}
    //{MySQL ODBC 3.51 Driver}
 
    char* szSql = "select * from table1";
    rc = SQLAllocEnv(&hEnv);
    rc = SQLAllocConnect(hEnv, &hDbc);
 
    rc = SQLDriverConnect(hDbc, NULL, (unsigned char*)szDSN, 
        SQL_NTS, (unsigned char*)strOut, 
        255, (SQLSMALLINT*)&iOut, SQL_DRIVER_NOPROMPT);
    {
        int ival;
        char chval[128];
        int ret1;
        int ret2;
        HSTMT hStmt;
        rc = SQLAllocStmt(hDbc,&hStmt);
        rc = SQLPrepare(hStmt,(unsigned char*)szSql, SQL_NTS);//1
        //rc = SQLBindCol(hStmt, tab_column, tr_type, tr_value, tr_len, len_or_ind);
        rc = SQLBindCol(hStmt, 1, SQL_C_ULONG, &ival, 4, (SQLINTEGER*)& ret1);
        rc = SQLBindCol(hStmt, 2, SQL_C_CHAR, chval, 128, (SQLINTEGER*)&ret2);
        rc = SQLExecute(hStmt); //2
        //if you have queries like drop/create/many update... 
        //instead of //1 //2 and //3 you could use
        //rc=SQLExecDirectA(hStmt,(unsigned char*)szSql,SQL_NTS);
        cout<< ">table:"<< endl;
        while(1) //3
        {
            rc = SQLFetch(hStmt);
            if(rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO)break;
            cout<< "{"<< ival<<"}{"<< chval<< "}"<< endl;
        }
        rc=SQLFreeStmt(hStmt, SQL_DROP);
    }
    rc = SQLDisconnect(hDbc);
    rc = SQLFreeEnv(hEnv);
    return 0;
} | 
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