anagram program

I am working on an anagram program that does the following:
1)  sorts letters of each word alphabetically for initial array of keys
2)  print keys and words
3)  goes through the array of keys to find duplicated keys and prints them

Inside the bubbleSortLetters function, I am getting this error:  'swap' : cannot convert parameter 1 from 'char' to 'char *'

#include <iostream>
using std::cin;
using std::cout;
using std::endl;
using std::iostream;
using std::ostream;

#include <string>
using std::getline;

#include<iomanip>
using std::setw;

#include <cstring>
using std::string;

#include <fstream>
using std::fstream;
using std::ifstream;
using std::ofstream;


char** readWords( const char*, int& );
void bubbleSortLetters( char *, int );
void swap( char *, char * );
void bubbleSortWords( char **, char **, int );
void swapWords( char ** , char ** );
void print( char **, char **, int );

int main( )
{
      int numberOfWords;
      //char ** words = readWords( "words.txt", numberOfWords );
      char** words = readWords( "ReadWords.txt", numberOfWords );

      char** keys = new char* [ numberOfWords ];

      for (int j = 0; j < numberOfWords; j++ )
      {
            keys[ j ] = strdup( words[ j ] );
      }

      // create the keys array
      for (int index = 0; index < numberOfWords; ++index )
      {
            keys[ index ] = strdup( words[ index ] );
            bubbleSortLetters( keys[ index ], strlen( keys[ index ] ) );
      }

      bubbleSortWords( keys, words, numberOfWords );

      for ( int index = 0; index < numberOfWords; ++index )
      {
            cout << keys[ index ] << "  " << words[ index ] << "\n";
      }

      print( words, keys, numberOfWords );
      
      return 0;

}//end main

char** readWords( const char* fileName, int& numberOfWords )
{
      ifstream countingStream( fileName );
      // first count them
      numberOfWords = 0;
      while ( true )
      {
            char line[100];
            countingStream.getline( line, 100 );
            if ( strlen( line ) == 0 )
            {
                  break;
            }
            numberOfWords += 1;
      }
      countingStream.close( );

      ifstream readingStream( fileName );
      char** words = new char* [ numberOfWords ];
      for ( int index = 0; index < numberOfWords; ++index )
      {
            char line[100];
            readingStream.getline( line, 100 );
            words[index] = strdup( line );
            cout << line << "\n";
      }
      cout << endl;
      readingStream.close( );
      return words;
}

void bubbleSortLetters( char *letters, int length )      // sorts the letters of each word
{
      for ( int pass = 0; pass < length; pass++ )
      {
            for ( int j = 0; j < length - 1; j++ )
            {
                  if (letters[ j ] > letters[ j+1 ] )
                  {
                        swap( letters[ j ], letters[ j+1 ] );            //'swap' : cannot convert parameter 1 from 'char' to 'char *'
                  }
            }
      }
}

void swap( char *  wordLetter, char *  wordLetter2 )      // called by bubbleSort
{
   int temp = *wordLetter;
   *wordLetter = *wordLetter2;
   *wordLetter2 = temp;
}


void bubbleSortWords(char **keys, char **words, int wordCount)      // sorts the key words
{
   for ( int pass = 0; pass < wordCount; pass++ )
      {
         for ( int j = 0; j < wordCount - 1; j++ )
            {
              if ( strcmp( keys[ j ], keys[ j+1 ] ) > 0 )
              {
                        swapWords( &( keys[ j ] ), &( keys[ j+1 ] ) );
                        swapWords( &( words[ j ] ), &( words[ j+1 ] ) );
              }
        }
   }
}

void swapWords( char** left, char** right ) // called by bubbleSortWords
{
      char* temp;

      temp = *left;
      *left = *right;
      *right = temp;
}


void print( char **inputWords, char **keyWords, int numWords )
{      
      char* previousAnagram;
      previousAnagram = 0;
      bool anagram = false;

      for( int pass = 0; pass < numWords; pass++ )
      {
            if( ( previousAnagram != 0 ) && (strcmp( previousAnagram, keyWords[ pass ] ) != 0 ) )
            {
                  for( int match = pass + 1; match < numWords; match++ )
                  {
                        if( strcmp( keyWords[ pass ], keyWords[ match ] ) == 0 )
                        {
                              if( match == pass + 1 )
                              {
                                    cout << inputWords[ pass ] << " ";
                              }

                              cout << inputWords[ match ] << " ";
                              anagram = true;

                        }
                  }

                  if( anagram == true )
                  {
                        cout << "\n";
                        anagram = false;
                  }
            }

            previousAnagram = keyWords[ pass ];
      }

      cout << "\n";

}
CharleneS77Asked:
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Infinity08Commented:
                       swap( letters[ j ], letters[ j+1 ] );            //'swap' : cannot convert parameter 1 from 'char' to 'char *'

should be :

                        swap( &letters[ j ], &letters[ j+1 ] );
0

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CharleneS77Author Commented:
Once again, you have opened my eyes.  Thank you!

If I use the following words in my text file:
rude
word
dure
from
form
letter

The final output of my program should be:
rude dure
from form

But for some reason, my output is only giving me:
from form

Can you see why I am not getting "rude dure"?
0
Infinity08Commented:
I noticed that this loop in your main :

      for (int j = 0; j < numberOfWords; j++ )
      {
            keys[ j ] = strdup( words[ j ] );
      }

should be removed, because you do the same thing in the next loop.



But, that's not causing your problem (it "just" causes a memory leak).

The problem is in your print() function :

            if( ( previousAnagram != 0 ) && (strcmp( previousAnagram, keyWords[ pass ] ) != 0 ) )

should be :

            if( ( previousAnagram == 0 ) || (strcmp( previousAnagram, keyWords[ pass ] ) != 0 ) )
0
CharleneS77Author Commented:
That did it.  Thank you.
0
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