added comments to input.c and tested the programm again

Start_Windows/input.c

@@ -32,8 +32,11 @@ int readWords(FILE *file, char words[][MAX_WORD_LEN], unsigned int maxWordCount)
 
     do
     {
+        // get the next char from the file
         currentChar = fgetc(file);
     
+        // if current char is a capital letter 
+        // write it into the words array
         if ((currentChar >= 'A') && (currentChar <= 'Z'))
         {
             if (!currentlyInWord)
@@ -44,6 +47,9 @@ int readWords(FILE *file, char words[][MAX_WORD_LEN], unsigned int maxWordCount)
             words[word][wordChar] = currentChar;
             wordChar++;
         }
+        // if the current char is a lowercase letter
+        // change it to its capital version
+        // and write it into the words array
         else if ((currentChar >= 'a') && (currentChar <= 'z'))
         {
             if (!currentlyInWord)
@@ -54,6 +60,9 @@ int readWords(FILE *file, char words[][MAX_WORD_LEN], unsigned int maxWordCount)
             words[word][wordChar] = toupper(currentChar);
             wordChar++;
         }
+        // if the current char is NOT a letter
+        // the end of a word has been reached
+        // skip chars untill a new letter is found
         else if (currentlyInWord)
         { 
             words[word][wordChar] = '\0';