Why pointer is used in this code? [on hold]

I am a noob in C and studying the STRTOK function. I have found an example code where a pointer is used. but i don't know the reason why. Can anyone explain why?

int main()
{
    char str[80] = "I love you";
    const char s[2] = " ";
    char *token;
    token = strtok(str, s);

    while( token != NULL ) 
    {
        printf( " %s\n", token );
        token = strtok(NULL, s);
    }

    return(0);
}

I just read a text about this function. I found that, strtok function returns a pointer value itself. That's why we have used pointer here ( *token) I