Question

In the language c using the isspace() function: Write a program to count the number of words, lines, and characters in its input. A word is any sequence of non-white-space characters.

Have your program continue until end-of-file. Make sure that your program works for the case of several white space characters in a row. The character count should also include white space characters.

Run your program using the following three sets of input:

            1. You're traveling through

​               another dimension;

              a dimension not only

              of sight and sound,

               but of mind.

            2.Some input which includes several spaces between words and some blank lines

            3. An empty file which mean the user just entering an enter key

As before, part of your grade will be based on the proper use of:

1. meaningful variable names

2. indentation

3. blank lines and spacing

4. comments on the following:

- program description

- function descriptions

- all variable and constant declarations

- ambiguous or complex sections of code

5. the correct use of local variables, local prototypes, and parameter passing

6. format and appearance of output

7. structured code

Answer 1

#include <stdio.h>

int main()
{
    // Variable declaration
    int noOfChars = 0; // To count chars
    int noOfWords = 0; // To count words
    int noOfLines = 0; // To count lines
    int ch = ' ';
    int prevCh = ' ';

    // File name
    char* fileName = "data.txt";

    // Get the file
    FILE *file = fopen(fileName, "r");

    // Check if the file exists
    if (!file)
    {
        printf("\nFile %s not found\n", fileName);
    }
    else
    {
        // Read till end of file
        while ((ch = fgetc(file)) != EOF)
        {
            // Check if ch is a space
            if (isspace(ch))
            {
                if ((prevCh != ' ') && ((noOfChars != 0) || (ch == '.'))) // If space is not the first char
                {
                    noOfWords += 1;
                }
            }
            if (ch == '\n')    // Check if ch is a new line
            {
                noOfLines += 1;
            }
            else
            {
                noOfChars += 1;
            }

            // Set prev char
            prevCh = ch;
        }

        // To account for the last line and word
        if ((prevCh != '\n') && (noOfChars != 0))
        {
            noOfLines += 1;
            noOfWords += 1;
        }

        //Close the file
        fclose(file);
    }

    // Display char, word, line count
    printf("\nNo. of characters: %d", noOfChars);
    printf("\nNo. of words: %d", noOfWords);
    printf("\nNo. of lines: %d\n", noOfLines);

    return 0;
}