Read Bmp Greyscales into C

I looked for how to read a Bmp file into a 2 or 1 dimensional Array under C , there are many solutions but not the one i need. I need to read the Black and white bmp into (to beginn) 2 dimensional array which have to contain values from 0 to 255 (greyscale) and then transform it to 1 dimensional array(but that's not a problem). Matlab does this automticly but i want to be more autonomous wo开发者_高级运维rking under C/C++ at the end the bmp shall be saved into a Postgre Database int array. Thanks

There's a bmp loader which I made for another SO question:
http://nishi.dreamhosters.com/u/so_bmp_v0.zip
The example bmp there is RGB, but it seems to work with grayscale as well.

FILE* f = fopen( "winnt.bmp", "rb" ); if( f==0 ) return 1;
fread( buf, 1,sizeof(buf), f );
fclose(f);

BITMAPFILEHEADER& bfh = (BITMAPFILEHEADER&)buf[0];
BITMAPINFO& bi = (BITMAPINFO&)buf[sizeof(BITMAPFILEHEADER)];
BITMAPINFOHEADER& bih = bi.bmiHeader; 
char* bitmap = &buf[bfh.bfOffBits];
int SX=bih.biWidth, SY=bih.biHeight;

bitmap here is the pointer to the pixel table (should be made unsigned for proper access though). Note that pixel rows in bmp can be stored in reverse order.

Sorry, misread question :/
If you don't mind "twisting" the rules a tiny little bit

#include <stdio.h>

int main(void) {
  int data[100][30] = {{0}}; /* initialize 2D array to all zeroes */
  int *p1d;
  size_t index;

  data[42][20] = 42; /* set 1 element ot 42 */
  p1d = &data[0][0];
  index = 42*30 + 20;
  printf("%d (should be 42)\n", p1d[index]); /* pretend it's a 1D array */
  return 0;
}