Q31161: LINE INPUT Avoids INPUT Statement’s "Redo from Start" Error

Article: Q31161
Product(s): See article
Version(s): 1.00 1.02 2.00 2.01 3.00 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | B_BasicCom B_BasicInt B_GWBasicI B_MQuickB | mspl13_basic
Last Modified: 28-DEC-1989

To avoid the "Redo from Start" error message encountered when
incorrect input is entered in response to an INPUT statement, use the
LINE INPUT statement instead. (The INPUT statement's "Redo from Start"
error message cannot be trapped or handled with the ON ERROR GOTO
statement.)

However, because LINE INPUT accepts all characters until it encounters
a carriage return, you must parse the input string yourself using
string manipulation (for example, MID$, INSTR) and type conversion
(for example, VAL).

This information applies to the following Microsoft retail BASIC
products:

1. Microsoft BASIC Compiler Versions 5.35, 5.36, 6.00, and 6.00b for
   MS-DOS

2. Microsoft BASIC PDS Version 7.00 for MS-DOS and MS OS/2

3. Microsoft BASIC Interpreter Version 5.28 for MS-DOS

4. Microsoft GW-BASIC Interpreter Versions 3.20, 3.22, and 3.23

5. Microsoft BASIC Interpreter Versions 1.x, 2.x, and 3.00 for the
   Apple Macintosh

6. Microsoft BASIC Compiler Version 1.00 for the Apple Macintosh

7. QuickBASIC Version 1.00 for the Apple Macintosh

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