C Compiler/Linker Warnings Involving Math function & Pointer Arithmetic

Howdy

I'm receiving a couple warnings and an error that I can't figure out.  First here's the code:

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include<sys/types.h>
#include<sys/stat.h>
#include <mpc.h>

double *A;
double *Q;
double *R;
double *Norm;
int i,j,rows,cols,a,b,c,d,e,f,temp, mn;
FILE *file;

#define FNAME "test"

int main()
{      
      file = fopen(FNAME, "r");
      fscanf(file,"%d",&rows);
      fscanf(file,"%d",&cols);

      temp = 0.0;

      A = (double *)malloc(rows*cols*sizeof(double));
      Q = (double *)malloc(rows*cols*sizeof(double));
      R = (double *)malloc(rows*cols*sizeof(double));
      Norm = (double *)malloc(cols*sizeof(double));

      if (A==NULL || Q==NULL || R==NULL)
            fprintf(stderr, "malloc failed\n");
      
      mn = rows*cols;
      for (i=0;i<mn;i++)
            fscanf(file,"%lf",(A+i));
      
      fclose(file);
      for (a=0;a<cols;a++)
      {
            for (b=0;b<rows;b++)
                  Norm[a] += pow(*(A+a*rows+b),2.0);
            Norm[a] = sqrt(Norm[a]);
            
            for (c=0;c<rows;c++)
                  *(Q+a*rows+c) = (1/Norm[a]) * (*(A+a*rows+c));
            
            *(R+a*rows+a) = Norm[a];
            for (d=a;d<cols-1;d++)
            {
                  temp = 0.0;
                  for (e=0;e<rows;e++)
                        temp += *(A+(d+1)*rows+e) * *(Q+a*rows+e);
                  *(R+(d+1)*rows+a);

                  temp = 0.0;
                  for (f=0;f<rows;f++)
                        *(A+(d+1)*rows+f) = *(A+(d+1)*rows+f) - (*(Q+a*rows+f) * *(R+(d+1)*rows+a));
            }
      }

      exit(0);
}

It's a sequential QR factorization of a given matrix.  Here are the warnings/errors:

cc-1171 cc: WARNING File = QR.c, Line = 64
 The indicated expression has no effect.

                        *(R+(d+1)*rows+a);
                        ^

cc-1001 cc: WARNING File = QR.c, Line = 97
  The source file does not end with a new-line character.

  }
   ^

        cc -64 -mp  -o QR QR.o
ld64: ERROR   33 : Unresolved text symbol "pow" -- 1st referenced by QR.o.
        Use linker option -v to see when and which objects, archives and dsos are loaded.  

So, I can't figure out why the pointer arithmetic involved with the R would have no effect, or for that matter, what that means.  Similar confusion with the new-line character at the end of the source file.  Finally, the linker doesn't appear to be able to find the power function in math.h called 'pow', although it has no problem with 'sqrt'.  

Does anyone have any experience with the above in any form?

Jason