/*

    This program illustrates reading and parsing
    command-line input based on whitespace.

*/

#include <stdio.h>
#include <string.h>

int main()
{

    const char* whitespace = " \n\r\f\t\v";
    char buffer[81];
    char* token;

    /* Start an endless loop. */

    while (1)
    {

        /* Read in up to 80 characters or until the newline is encountered. */

        printf("\nEnter command:  ");
        fgets(buffer, 81, stdin);

        /* Print the command as entered. */

        printf("\nThis is the command as entered:  %s\n", buffer);

        /* Print the command broken into whitespace-delimited tokens. */

        printf("\nThis is the command parsed into whitespace-delimited tokens (one per line):  \n\n");

        token = strtok(buffer, whitespace);

        while (token != NULL)
        {

            printf("%s\n", token);
            token = strtok(NULL, whitespace);

        }

    }

    return 0;

}