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Dark GDK / Simple question about fstream.

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SushiBox

Years of Service

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Joined: 20th Sep 2008

Location: Ohio

Posted: 12th Mar 2009 00:14

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I want to read values from a text file using fstream, but I want to read a specific line number and store each line number into an array.

For example my text file will look like this:

+ Code Snippet

V1.0
GroundLayer
22
11
11
22
55
66

So line 1 is the version, line 2 is the tile layer, and 3 on are tile id's. I have it reading the WHOLE file properly, just how do I use getline or what ever to return one line at a time.

Then I can do a for loop to store each into an array, but I just don't understand getline lol.

Thanks in advanced.

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Lion Jin

Years of Service

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Joined: 24th Sep 2006

Location:

Posted: 12th Mar 2009 03:17

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Several ways to do this ,First you can read all the content into the memory (using getline )and store them all into a string ,then you can use string's find function to find which data you want to store one by one.You can search in the internet ,I think there are many articles to explain this.

Here are some codes from my project.

+ Code Snippet

#define LEN 64
	char buffer[LEN];
	std::string info;
	std::ifstream fout;

	// Open file
	fout.open( file,std::ios_base::in);
	if (! fout.is_open() )
	{
		//cout<<"Error:Could not open config file \" "<<filename<<" \".\n";
		return;
	}

	// Read file
	while ( fout.getline(buffer,LEN) )
	{
		info+=buffer;
	}
	fout.close();

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Dark GDK / Simple question about fstream.