_acmdln, _tcmdln, _wcmdln
Internal CRT global variable. The command line.
These CRT internal variables store the complete command line. They are exposed in the exported symbols for the CRT, but are not intended for use in your code. _acmdln stores the data as a character string. _wcmdln stores the data as a wide character string. _tcmdln can be defined as either _acmdln or _wcmdln, depending on which is appropriate.