Hey everybody,

Firstly, thanks for reading this thread. I'm c++ n00b so don't be too harsh on me . Anyway I'm struggling to solve my first cpp project. Before I worked for a few month with .NET. So I reckon I have some basics, hopefully . Now to my problem.

So, I have a file from gps receiver. I can't specify exactly what type it is, but I suppose it's binary file. Definitely it's not a text and there many unreadable characters. Some of them are actually readable e.g. pair of identifiers for certain messages (µb=0xB5 0x62). After these identifiers there is a body with the message that has to be converted to whatever(int,long,double....).
I want to read sequentially the whole file from the start to the end (say it's around 150MB). Find these pair identifiers. Read the body of each identifier (with defined length ) to unique struct. I don't worry about the output for now. I would be glad if you can help me with the main loop. I have this for now:
Code:
void FileManager::openFile(){
	//variables are located in FileManager.h
	ifstream fp;
	unsigned long len;
	char *buf;
	streambuf * pbuf;

	char bufferA;
	char bufferB;
	fp.open("raw.ubx", ifstream::binary | ios::in);
	fp.seekg(0, ios::end);
	len = fp.tellg();
	fp.seekg(0, ios::beg);
	pbuf = fp.rdbuf();
	while (pbuf->sgetc()!=EOF){
		bufferB = pbuf->sbumpc();
		if ((bufferB == 'µ') && (bufferA == 'b')){
			/*function call of this identifier*/
		}
		bufferA = bufferB;
	}
}
In my file on the first position there is µ character. But I get "-75" instead. All advices and tips from you are more than appreciated.
Also I would be glad if you know where to get offline ISO c++ documentation.

Thank you in advance