capture last word function

#include <stdio.h>
#include <string.h>
#define MAX 30 // maximum word characters are 30
void lastword_func(char *last_word); // func declaration
int
main()
{
        char last_word[MAX];
        lastword_func(last_word);
        if (strcmp(last_word, "defbbasda") == 0)
                printf("right %s\n", last_word);
        else
                printf("wrong guess\n");
        return (0);
}
void
lastword_func(char * last_word)
{
        unsigned char i, state = 0;
        i = 0;
        int c;
        while ((c = getchar()) != EOF && i < MAX) {
                if (c == ' ' || c == '\t' || c == '\n')
                        state = 1;
                else {
                        if (state == 1) {
                                i = 0;
                                state = 0;
                        }
                                last_word[i++] = c;
                }
        }
        last_word[i] = '\0';
}