Sorting states by unique characters help

[emohs]

Ok so I have a program where I am supposed to load a txt file into an array and have it sort the states according to the number of unique letter that they have. I have this working almost like it is supposed to I am only having problems with two states... 'Hawaii' and 'Tennessee' now I have noticed the common factor here is the duplicate last letter. I was wondering if someone would look through this code and tell me how I can remedy this problem.

// stateArray is the array that the states are loaded in alphabetical order
// numArray is an array that is supposed to hold the number of unique
//characters by this sort

void fillNum(char stateArray[][80], int numArray[])
{
int firstVar;
char lowerArray[80];
int a;
int b;
int c = 0;
int d = 0;
for (firstVar = 0; firstVar < 50; ++firstVar)
{
lower(lowerArray, stateArray, firstVar);
for (a = 0; lowerArray[a] != '\0'; ++a)
{
for (b = a + 1; lowerArray[b] != '\0'; ++b)
{
if (isspace(lowerArray[a]))
{
c = 0;
break;
}
if (lowerArray[a] == lowerArray[b])
{
c = 0;
break;
}
else
{
c = 1;
}
}
d = d + c;
}
numArray[firstVar] = d;
d = 0;
}
}

[jonnin]

tennessee should not break it if it were related to the last part of the string because it already has counted the 'e' earlier. The bug might be something else?

[emohs]

I don't know why it made a difference but I reversed the sort and if fixed it

void fillNum(char stateArray[][80], int numArray[])
{
   int firstVar;
   char lowerArray[80];
   int a;
   int b;
   int c = 0;
   int d = 0;
   for (firstVar = 0; firstVar < 50; ++firstVar)
   {
      lower(lowerArray, stateArray, firstVar);
      for (a = 1; lowerArray[a] != '\0'; ++a)
      {
         for (b = a - 1; lowerArray[b] != '\0'; --b)
         {
            if (isspace(lowerArray[a]))
            {
               c = 0;
               break;
            }
            if (lowerArray[a] == lowerArray[b])
            {
               c = 0;
               break;
            }
            else
            {
               c = 1;
    }
         }
         d = d + c;
      }
      numArray[firstVar] = d;
      d = 0;
   }
}