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Old 02-16-2006, 07:25 AM   #1
cigarstub
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Registered: Sep 2005
Posts: 145

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I really can't do this w/out ur sample code in C nature language, please help me writ


I really do not know the optimy way dealing w/ "editing a file"
how to open ? Is it fopen("a pointer", "the filename")
to write n save immediatr ? is it append("a string","to the file") then Must I close the file to save the change or no need since I do not want this method
how to go to a specific line in txt file ?
how to return to the previous line after appending ?
Could u write me a sample code doing all these ?
 
Old 02-16-2006, 07:30 AM   #2
kshkid
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Registered: Dec 2005
Distribution: RHEL3, FC3
Posts: 383

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Quote:
Originally Posted by cigarstub
I really do not know the optimy way dealing w/ "editing a file"
how to open ? Is it fopen("a pointer", "the filename")
to write n save immediatr ? is it append("a string","to the file") then Must I close the file to save the change or no need since I do not want this method
how to go to a specific line in txt file ?
how to return to the previous line after appending ?
Could u write me a sample code doing all these ?
yes, it is fopen (or) open to a file
to write and save immediately fwrite and flush it
if you are using write no need to flush it
if you close the file; implicitly contents in file buffer would be flushed and stored
to go specific line -> fseek

check man pages for all the system calls
 
Old 02-16-2006, 07:31 AM   #3
nadroj
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Registered: Jan 2005
Location: Canada
Distribution: ubuntu
Posts: 2,539

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simple answer: No. we wont do your assignments for you.

long answer:
your on the basic right track. you will need fopen and fclose.. and a combination of fwrite/fread or fputc/fgetc

read here note the links at the very bottom of the page
 
  


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