<prompt> Jinsi ya kuungana na database SQL katika C ? Nipe code mfano.  <response>: Here is an example of how to connect to a SQL Server database using C and the ODBC driver:include include include include int main SQLHENV env; SQLHDBC dbc; SQLRETURN ret; Allocate environment handle SQLAllocHandleSQL_HANDLE_ENV, SQL_NULL_HANDLE, env; SQLSetEnvAttrenv, SQL_ATTR_ODBC_VERSION, voidSQL_OV_ODBC3, 0; Allocate connection handle SQLAllocHandleSQL_HANDLE_DBC, env, dbc; Connect to the database ret SQLConnectdbc, SQLCHARmyServerName, SQL_NTS, SQLCHARmyUsername, SQL_NTS, SQLCHARmyPassword, SQL_NTS; if ret ! SQL_SUCCESS ret ! SQL_SUCCESS_WITH_INFO Error handling... return -1; Do something with the connected database... Disconnect from the database and free handles SQLDisconnectdbc; SQLFreeHandleSQL_HANDLE_DBC, dbc; SQLFreeHandleSQL_HANDLE_ENV, env; return 0;In this example, SQLAllocHandle is used to allocate an environment handle and a connection handle. SQLSetEnvAttr is used to set the ODBC version to 3.0. SQLConnect is used to connect to the database, providing the server name, username, and password. Once the connection is established, you can run SQL queries or access the database as needed. Finally, SQLDisconnect is used to disconnect from the database and SQLFreeHandle is used to free the allocated handles. 