Q50637: PRINT # to "CONS:" and PRINT Can Use > for DOS Redirection
Article: Q50637 Product(s): See article Version(s): 4.50 4.00 4.00b Operating System(s): MS-DOS Keyword(s): ENDUSER | SR# S891103-4 B_BasicCom | mspl13_basic Last Modified: 13-DEC-1989 In a Microsoft QuickBASIC program, the output from either a compiled or interpreted program can be redirected from the SCREEN to a file by using the redirection ">" operator in MS-DOS. This will also redirect stream devices, such as the LPT1 printer, to MS-DOS. This information applies to Microsoft QuickBASIC Versions 4.00, 4.00b, and 4.50 for MS-DOS, to Microsoft QuickBASIC Interpreter (Academic Edition) Version 1.00, and to Microsoft BASIC Compiler Versions 6.00, and 6.00b for MS-DOS and MS OS/2, and to Microsoft BASIC PDS Version 7.00 for MS-DOS and MS OS/2. ---------------- The following are the only two forms of output from BASIC that can be redirected to a file: 1. Output from the standard PRINT statement 2. Output from the PRINT #Num, statement, where #Num is the "CONS:" device OPENed for output (OPEN "CONS:" FOR OUTPUT AS #Num) Also, if you are testing a program inside the editor environment in QB.EXE from QuickBASIC Version 4.00, 4.00b, or 4.50, QBX.EXE from BASIC PDS 7.00, or in QBI.EXE from QuickBASIC Interpreter (Academic Edition) Version 1.00, you can redirect the output of all programs run in the environment, as follows: QB > LPT1 QBX > LPT1 or QBI > LPT1 The QB, QBX, or QBI editor environment will behave normally, but output from the BASIC program running in the environment will be redirected to the printer. You can also redirect to a file on disk as follows: QB > myfile.dat QBX > myfile.dat or QBI > myfile.dat The screen output obtained by opening the "SCRN:" FOR OUTPUT AS #Num2, and executing the statement PRINT #Num2 can't be redirected to a file. The following is an example of redirecting the output of a QuickBASIC program to a file: Code Example ------------ OPEN "CONS:" FOR OUTPUT AS #1 OPEN "SCRN:" FOR OUTPUT AS #2 PRINT "This is a regular print" PRINT #2, "This is a print to scrn:" PRINT "This is a regular print" PRINT #1, "This is a print to cons:" CLOSE #1 CLOSE #2 END Once the program is compiled, you can redirect the output to a file by executing the following line at the DOS prompt: EXEName > OutputFileName When this is executed, the OutputFileName will contain the following: This is a regular print This is a regular print This is a print to cons: And the screen will contain the following: This is a print to scrn:
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