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reading a csv file

25 New Member
hey,
i have to do the following in c:
i want to read data from a csv file.
i need to read the first, second and fifth column of the file.
i am using fread but i cant get it to read the desired data.
Sep 19 '06
13 12345
risby
30 New Member
hey,
i have to do the following in c:
i want to read data from a csv file.
i need to read the first, second and fifth column of the file.
i am using fread but i cant get it to read the desired data.
If you are reading a text file, wherein each line can be of different length and is delimited by the newline character, then fread is inappropriate.

fread() will read a specific number of bytes and using it will unnecessarily complicate your solution. Use fgets() to read a line at a time and then use strchr() to find a comma (also look at strtok() which you may or may not find easier to use).
Sep 19 '06 #11
krishnatpl
1 New Member
Hi Can you please tell me how to do the same in
1. Windows and
2. Using File operations.
Aug 26 '08 #12
JosAH
11,448 Recognized Expert MVP
Hi Can you please tell me how to do the same in
1. Windows and
2. Using File operations.
Please don't hijack someone else's thread; it is considered rude. Either read and
optionally reply in this thread or if you really want to you can start your own thread.

kind regards,

Jos (moderator)

ps. See the 'Help' link near the top of this page for more information.
Aug 26 '08 #13
arnaudk
424 Contributor
hey,
i have to do the following in c:
i want to read data from a csv file.
i need to read the first, second and fifth column of the file.
i am using fread but i cant get it to read the desired data.
What pukur123 is suggesting amounts to using linux commands to split the columns into separate files. But that won't help you if you want to read the csv data into variables of your C program, you'll need to use C commands and there is one ideally suited for what you want to do (that will work in linux and windows): fscanf

Use fgets() to read a line at a time and then use strchr() to find a comma (also look at strtok() which you may or may not find easier to use).
fscanf() is even simpler than fgets() when you know in advance what format to expect; you won't need to search for commas and date slashes, etc.

[EDIT:] Whoops, I didn't notice this thread was started in 2006...[/EDIT]
Aug 26 '08 #14

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