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Re: Random numbers and substitution

by ig (Vicar)
on May 31, 2011 at 09:07 UTC ( #907422=note: print w/replies, xml ) Need Help??

in reply to Random numbers and substitution

I haven't tried running your program, but I have a few suggestions for you to think about:

At the beginning of your program you open high_score.dat, then each time through your loop you read until end of file. So, the first time through the loop you read all the lines in the file, stopping when you reach end of file. What do you think happens the second time through the loop? When you start the second iteration of the loop, where do you start reading the file?

In your loop, after having read all the lines in the file, if the user guesses the correct name, you try to read more lines from the file. What do you think happens when you try to read a line from the file after having read all the way to the end of the file?

If you find the name of the user in the file, you change the score in $line. That's data in memory. What do you think you have to do to get that string from the scalar variable in memory to the file?

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[marioroy]: karlgoethebier I do not do Racket ball anymore. That was from gym class long ago.
[karlgoethebier]: marioroy ;Men need a challenge
Lady_Aleena remembers winning dodgeball and wonders why parents who played it will not let their kids play it.
[marioroy]: Disciplus My wife and I went on vacation. At work, I was stuck polling SNMP from 20 million devices. It would hang at 80,000. On the mist boat, hear a voice to enable grace in the design that 10x and more performance awaits.
[Lady_Aleena]: Women need challenges too karlgoethebier. 8)
[marioroy]: s/hear/heard/
[karlgoethebier]: Discipulus: No. See https://en. wiki/Tribe_( Native_American)
[karlgoethebier]: They took Unix from some aliens
[marioroy]: Perl is so powerful that it can poll 40 metrics from 20 million devices in 40 minutes using 4 nodes only.
[karlgoethebier]: http://www. aliens.htm

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