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On Fri, Aug 29, 2008 at 08:16:35PM -0400, Ruben Safir wrote: > 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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