#include <stdio.h>
 
int main()
  {
   int ROWS=7,COLS=5,a[ROWS][COLS],(*p)[COLS],i=3,y,x;
   for(y=0;y<ROWS;++y) for(x=0;x<COLS;++x) a[y][x]=10*(y+1)+x+1;
   for(y=0;y<ROWS;++y,printf("\n")) for(x=0;x<COLS;++x) printf("%3d",a[y][x]);
   printf("\n");
   for(p=&a[0];p<&a[ROWS];++p)
     {
      printf("%p %u %u\n",(void*)p,(unsigned)(void*)p,COLS*sizeof(int)+(unsigned)(void*)p);
      (*p)[i]=0;
     }
   printf("\n");
   for(y=0;y<ROWS;++y,printf("\n")) for(x=0;x<COLS;++x) printf("%3d",a[y][x]);
   return 0;
  }

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