Thread: command line arguments problem

Hi,
I have to write a program which accepts a set of numbers and sort them in descending order and if "-r" is included in the command line then it should sort the numbers in ascending order.The program i wrote isn't working plz tell me what is wrong with it and how to correct it

Code:

# include <stdio.h>

main (argc, argv)
int argc;
char *argv[];
{
  int ar[100];
  int i, j, n, flag, temp;

  printf ("usage: a.out for descending order\n");
  printf ("usage: a.out -r for ascending order\n");
  printf ("enter the number of elements in array\n");
  scanf ("%d", &n);
  printf ("enter the elements of array\n");
  for (i = 0; i < n; i++)
   scanf ("%d", &ar[i]);
  if (*argv == "-r")
    {
     for (i = 0; i < n; i++)
        {
         for (j = 0; j < (n-i-1); j++)
            {
             if (ar[j] > ar[j+1])
               {
                temp = ar[j];
                ar[j] = ar[j+1];
                ar[j+1] = temp;
               }
            }
        }
     printf ("the sorted array is \n");
     for (i = 0; i < n; i++)
     printf ("%d\n", ar[i]);
    }
else
   {
    for (i = 0; i < n; i++)
       {
         for (j = 0; j < (n-i-1); j++)
             {
              if (ar[j] < ar[j+1])
                {
                 temp = ar[j];
                 ar[j] = ar[j+1];
                 ar[j+1] = temp;
                }
             }
        }
    printf ("the sorted array is \n");
    for (i = 0; i < n; i++)
    printf ("%d\n", ar[i]);
   }
}

I tried by placing

Code:

If (argv[1] == "-r")

and

Code:

if ((argv[1] == "-" )&& (argv[2] == "r"))

in place of the previous if statement but still it doesn't seem to work