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reading a text file

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Nemoticchigga Nemoticchigga is offline Offline
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reading a text file

 
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  #1
Sep 8th, 2008
I am attempting to read a text file.

C++ Syntax (Toggle Plain Text) 
  1. 		ifstream indata;
  2. 	                indata.open(filename);
  3. 		if(!indata) 
  4. 		{ 
  5. 			// file couldn't be opened
  6. 		}
  7. 		else
  8. 		{
  9. 			// file opened
  10. 		}
  11.  
  12. 		// keep reading until end-of-file
  13. 		string data;
  14.  
  15. 		while (getline(indata, data)) 
  16. 		{
  17. 			//this is where i want to store values
  18. 		}
  19.  
  20. 		indata.close();

I want to read values from a text file. Im making the text file so I can read it however. This is a simple example of what I was thinking:

////text file/////
1 2 3 4
5 6 7 8
9 10 11 12
////text file/////

How do I store these values into a 2 dimensional array?
Last edited by Nemoticchigga; Sep 8th, 2008 at 1:32 pm.
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Re: reading a text file

 
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  #2
Sep 8th, 2008
If there is no need for error checking I would read the values from the file as integers as opposed to strings.
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Re: reading a text file

 
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  #3
Sep 8th, 2008
how?
Last edited by Nemoticchigga; Sep 8th, 2008 at 1:43 pm.
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Re: reading a text file

 
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  #4
Sep 8th, 2008
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Originally Posted by Nemoticchigga View Post
how?
Set up your 2-D array of integers, then read values into the array with the >> operator.

C++ Syntax (Toggle Plain Text) 
  1. indata >> array[i][j];
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