how to read from a file and save some changes on it?

[kassik]

Hi
I'm doing a little c++ project. I have a notepad file and I would like to read each line into a separate array of integers.Suppose I have a text file that looks like this:

001-1 1/4
002-2 1/32
010-1 -1/1
011-2 -3/8
01-21 1/4
01-10 1/2
020-2 -1/8
02-20 1/16
02-1-1 -3/8
100-1 1/1
101-2 1/2
10-21 -1/1
110-2 1/4
11-1-1 1/2
12-2-1 1/3
12-1-2 1/6
1-22-1 -1/1
1-2-12 1/2
1-11-1 -1/1
1-12-2 -3/8
1-1-22 1/8
200-2 1/8
21-1-2 1/12
22-2-2 1/16
2-22-2 -1/8
2-11-2 1/4

I want to read every integer in a row and put it separately in another file in order to be readable by an array.
I would like to make an array that for instance for first line of this example the contents of array are:
x[0]=0 ,x[1]=0 , x[2]=1, x[3]=-1, x[4]=1, x[5]=4
in order to put into the array, I need to separate these integers.I want to know how to separate these numbers.

any help is really appreciated.

[weaknessforcats]

Just use any non-integer delimiter. Often a comma is used and these are the CSV (comma-separated values) files.

[kassik]

Thanks for your attention.
I have separate them in order to be readable and putting into an array, now i want to write a code to put every integer into array.

[weaknessforcats]

You just did:

x[0]=0 ,x[1]=0 , x[2]=1, x[3]=-1, x[4]=1, x[5]=4

Since you are using C++ you can use the >> operator:

myfile >> x[0] >> comma >> x[1] >> comma etc...

so this data:

1234,567

will 1234 in x[0] and 567 into x[1]. The comma goes into a char junk variable. The comma tells the >> operator that the integer has ended.

[kassik]

thanks a lot.
it worked very well
Done.
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