C++ :: How To Read Binary Files

I'm trying read a binary file. A binary files is continued with bytes(ascci characters). and the 1st position is the position 0(zero).

I'm trying read just some values from ICO file:

- the 3rd value is in 4th-1 position(number of icons); (See the table: [URL] .... )
- the with is the (numberoficons*16) + 4 (the 16 is the Entries structure size) position;
- the height is the (numberoficons*16) + 4 + 4 (the 16 is the Entries structure size) position.

now see the code:

int iconwidth;
int iconheight;
int iconcount;
FILE *iconfile = fopen(filename.c_str(), "rb");//open the file
fseek(iconfile,4-1,SEEK_SET); //put the file in position 6(the position starts from 0)
fread(&iconcount,sizeof(char),2,iconfile);//get 2 blocks with char size(2 bytes).. i'm getting the number of icons

[Code] ....

so what i'm doing wrong with block positions?