I have a binary file where the first line contains meta data (e.g. rows 343 columns 770 ...) that I store into variables. After this, the rest of the file contains short ints correlating to various heights that I also want to store (in this bit of code I'm just testing to see if I can get a single value). My code:
int map[800][800];
string a;
int numrows, numcolumns, bytespp, secondspp, lls, tls, min, max, special;
ifstream infile;
infile.open("usaW70N25D5.dat", ios::binary | ios::in);
infile >>a >> numrows >> a>>numcolumns >> a>> bytespp >>a >> secondspp >>a >> lls >> a>> tls >> a>> min >>a >> max >>a >> special;
int row = 0; max = 0;
cout << numrows << " " << numcolumns << " " << bytespp << " " << secondspp << " " << lls << " " << tls << " " << min << " " << max << " " << special << endl;
short int val = 0;
infile.read((char*)&val,sizeof(infile));
cout << val<< endl;
The error I get is:
Unhandled exception at 0x52ec6e9f (msvcp100d.dll) in mapproject.exe: 0xC0000005: Access violation reading location 0xfe0cfe0c.
Where am I going wrong in trying to read the file? I thought maybe that I would have to move the position one over and tried:
int spot = infile.tellg(); spot+=1;
infile.seekg(spot);
but that didn't help.
The stream reading >> doesn't read two binary bytes. It reads a string of characters.