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On Fri, Aug 29, 2008 at 05:43:40PM -0400, Stephen Adler wrote: > Guys, > > I've got a standard c coding question which has been nagging me for a > while and I was wondering what you guys may think or have the correct > solution to this problem.... > > Lets say I have a 2 dim array of data and the dimension sizes can change > depending on the specific data set. I can read in the x and y dimensions > from a file, then read in the x*y elements of the data a populate a > memory area x*y*elementsizeinbytes with the data. But now I want to > access the data. Without doing pointer arithmatic, is it possible to use > the standard [][] notation somehow? > > for example > > int *data; > x=getXDim(); > y=getYDim(); > data=(int *)malloc(x*y*sizeof(int)); > readInData(x,y,data); > printf("Middle data element is %d\n",data[y][x]); > > but I know that that data[y][x] will barf on the compiler because the > compiler has no way of knowing what the y size of the "y" dimension is... > > Any suggestions on how to use the N-dimensional bracket notation in this > situation? > > Thanks. >
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