# include <stdio.h>
# include <stdbool.h>
//
//  Program 10.8, Stephen Kochan, Programming in C.
//
int main ( void );
bool alphabetic ( const char c );
void readLine ( char buffer[] );
int countWords ( const char string[] );

int main ( void )
{
  char text[81];
  int totalWords = 0;
  bool endOfText = false;

  printf ( "Type in your text.\n" );
  printf ( "When you are done, press 'RETURN'.\n" );

  while ( ! endOfText )
  {
    readLine ( text );

    if ( text[0] = '\0' )
    {
      endOfText = true;
    }
    else
    {
      totalWords = totalWords + countWords ( text );
    }
  }

  printf ( "\n" );
  printf ( "There are %i words in the above text.\n", totalWords );

  return 0;
}

bool alphabetic ( const char c )
{
  bool value;

  if ( ( 'a' <= c && c <= 'z' ) ||
       ( 'A' <= c && c <= 'Z' ) )
  {
    value = true;
  }
  else
  {
    value = false;
  }
  return value;
}

void readLine ( char buffer[] )
{
  char character;
  int i = 0;

  do
  {
    character = getchar ( );
    buffer[i] = character;
    i = i + 1;
  }
  while ( character != '\n' );

  buffer[i-1] = '\0';

  return;
}

int countWords ( const char string[] )
{
  int i, wordCount = 0;
  bool lookingForWord = true;

  for ( i = 0; string[i] != '\0'; i++ )
  {
    if ( alphabetic ( string[i] ) )
    {
      if ( lookingForWord )
      {
        wordCount = wordCount + 1;
        lookingForWord = false;
      }
    }
    else
    {
      lookingForWord = true;
    }
  }

  return wordCount;
}