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Reading a File

I have files in the following format:

Basket 1:
Field1=xxxx
Field2=xxx
Field3=xxx
Basket 2:
Field1=xxxx
Field2=xxx
Field3=xxx
Basket 3:
Field1=xxxx
Field2=xxx
Field3=xxx
Basket 4:
Field1=xxxx
Field2=xxx
Field3=xxx
...........and so on

No of baskets varies in each file.But the no. of fields are same in each basket.

My aim is:
Based on the Field1 value in each basket I want perform some
operations on Field2 and Field3 values and write the output to some other file.

Can somebody help, how to start.any sample code will be more helpful.

Answers2000

The basic approach is

(a) Read the file into a buffer using fopen, fread, fclose
(b) parse the buffer into an internal data structure (say an array in C, or map/multimap in C++ - easier with C++). Use strchr or similar to break on new lines, colons, equals or other significant characters.
(c) Modify internal data structure
(d) Write out internal data structure using fopen, fwrite, fclose

Which part of the above do you need help on - or all of em ?

anilkumarv

ASKER

Mainly i need help in parsing.

thanx

RONSLOW

use strtok to split up input lines

laeuchli

I would put it in an ini file and use the windows ini file reading functions to read it. They are very easy to use.

anilkumarv

ASKER

I am on unix not on windows.

ASKER CERTIFIED SOLUTION

alexo

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