|
|
|
![]() |
|
|||||||
|
||||||||
![]() |
|
|
Thread Tools | Rate Thread | Display Modes |
|
|
|
#1
|
||||
|
||||
|
reading negative numbers from a file in VB
So far the code I have written can read and write to and from a file.
In other words, I have the Code:
Line Input #FileNum... Code:
Write #FileNum... But how do I handel a situation where the file has negative numbers to be read? I am able to output to a file a negative integer. But when I try to read it back I get an error. I assume I will have to read each line of the file one by one into a string and then have it converted. What are the string conversion routines in VB? The line of code is written as -1 I suppose I have to do some string manipulation to get it stored back as a negative integer. |
|
#2
|
|||||
|
|||||
|
Re: reading negative numbers from a file in VB
http://www.chiefdelphi.com/forums/sh...ad.php?t=29944
Replace Delphi with your programming language of choice (minus PIC C) This is not a general programming website. We are for the FIRST robotics competition. |
|
#3
|
||||
|
||||
|
Re: reading negative numbers from a file in VB
Although we can try to help.
![]() I don't know VB worth crap, so there could be an easier way, but I'd say that you could check if it begins with a '-,' strip it off if it does, convert the main part to a number, then multiply by -1. IE, if you have "-5" in a file, you take off hte negative ("5"), convert it to a number (5), then multiply by -1 (-5). |
|
#4
|
|||||
|
|||||
|
Re: reading negative numbers from a file in VB
If you're using the Write # statement, you should use Input #, not Line Input #.
Otherwise, VB is very good about preserving data. |
|
#5
|
|||||
|
|||||
|
Re: reading negative numbers from a file in VB
I believe the string conversion routine you're looking for is:
val() It'll convert a string to a number. The opposite is: str() (which converts a number to a string). |
![]() |
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Negative numbers? | Calvin | Programming | 6 | 09-02-2005 10:46 |
| Error in header file p18f8520.h !!! | RbtGal1351 | Programming | 3 | 17-01-2005 16:03 |
| heres the code. y this not working | omega | Programming | 16 | 31-03-2004 15:18 |
| File Sharing and Revision Tracking | Madison | FIRST-related Organizations | 14 | 04-06-2003 18:01 |