Replace file content

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I have 2 files,
first

t1- x,y,z
t2- a,b,c
.
.
so on

second

x=1
y=2
z=3
a=4
.
. so on

I want to replace the content of file one wrt file second
example

t1- 1,2,3
t2- 4,5,6
.
.
so on.

Posted 26-Mar-12 7:25am

theanil

Updated 28-Mar-12 5:59am

v2

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Chandrasekharan P 26-Mar-12 13:43pm

Anil, where are you stuck?? or is it that you are expecting us to give you the code??

2 solutions

Solution 2

You have to parse both the files.
If your files are really so regular then you may just use profitably fscanf and fprintf for the job.
For instance

C

if ( fscanf(fp "%c=%d", &name, &value) == 2)
{
  // here add the pair {name, value} to the look up table
}

is a very rough line-parser for second file entries.

If you need to handle more complex scenarios (for instance multiple blanks, longer identifier names) then you may use awk or parsing tools tools like bison & flex.

Posted 26-Mar-12 8:06am

CPallini

v2

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OriginalGriff · Accepted Answer · 2012-03-26T08:04:00

Solution 1

We do not do your homework: it is set for a reason. It is there so that you think about what you have been told, and try to understand it. It is also there so that your tutor can identify areas where you are weak, and focus more attention on remedial action.

Try it yourself, you may find it is not as difficult as you think!

Posted 26-Mar-12 8:04am

OriginalGriff

Comments

theanil 26-Mar-12 14:06pm

Hey its not my homework