program9-7.c

// Counting Words

// Function to determine if a character is alphabetic

#include <stdio.h>
#include <stdbool.h>

bool alphabetic (const char c)
{
    if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
        return true;
    else
        return false;
}

/* Function to count the number of
 words in a string */

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

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

    return wordCount;
 }

 int main (void)
 {
    const char text1[] = "Well, here goes.";
    const char text2[] = "And here we go... again.";
    int countWords (const char string[]);

    printf ("%s - words = %i\n", text1, countWords (text1));
    printf ("%s - words = %i\n", text2, countWords (text2));

    return 0;
 }