#include "stdio.h"
  #include "4rank.c"
  main()
  { static double a[5][4]={ {1.0,2.0,3.0,4.0},
                            {5.0,6.0,7.0,8.0},
                            {9.0,10.0,11.0,12.0},
                            {13.0,14.0,15.0,16.0},
                            {17.0,18.0,19.0,20.0}};
    printf("\n");
    printf("RANK=%d\n",rank(a,5,4));
    printf("\n");
  }