Word count in string

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#define N 256
uint32_t word_count(uint8_t *mas) {
    int word = 0, count = 0;
    for (int i = 0; mas[i]!='\0'; i++) {
        if (isspace(mas[i]) == 0) {
            if (word == 0) {
                count++;
                printf("sym=[%c]\n", mas[i]);
            }
            word = 1;
        } else {
            word = 0;
        }
    }
    return count;
}

int main(int argc, char **argv) {
    char str[N];
    printf("Input string:\n");
    fgets(str, N, stdin);        //read line
    str[strlen(str) - 1] = '\0'; // delete new line symbol
    printf("str = [%s]\n", str);
    printf("word count: %d", word_count((uint8_t*)str));
    return 0;
}