KTaNE Module Solver: Who's On First

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

#define L1LEFT  "[# .]\n"
#define L1RIGHT "[. #]\n"
#define L1NONE  "[. .]\n"

char *l1res_str[6] = {
    L1LEFT  L1NONE  L1NONE,
    L1RIGHT L1NONE  L1NONE,
    L1NONE  L1LEFT  L1NONE,
    L1NONE  L1RIGHT L1NONE,
    L1NONE  L1NONE  L1LEFT,
    L1NONE  L1NONE  L1RIGHT
};

int
streq(char *s1, char *s2)
{
    size_t l1 = strlen(s1);
    size_t l2 = strlen(s2);

    if(l1 != l2)
        return 0;

    for(size_t i = 0; i < l1; i++)
        if(tolower(s1[i]) != tolower(s2[i]))
            return 0;

    return 1;
}

int
lookup_1(char *word)
{
    char *table[6][10] = {
        {"ur", NULL},
        {"first", "okay", "c", NULL},
        {"yes", "nothing", "led", "they are", NULL},
        {"blank", "read", "red", "you", "your", "you're", "their", NULL},
        {"", "reed", "leed", "they're", NULL},
        {"display", "says", "no", "lead", "hold on", "you are", "there", "see", "cee", NULL}
    };

    for(size_t i = 0; i < 6; i++)
        for(char **selrow = table[i]; *selrow != NULL; selrow++)
            if(streq(word, *selrow))
                return i;

    return -1;
}

void
s2_get_input(char *out)
{
    int ch;

    for(size_t i = 0; i < 7; i++){
        ch = getchar();

        if(isspace(ch) && ch != ' ')
            break;

        *out++ = ch;
    }

    *out = '\0';
}

void
s2_print_row(char **row)
{
    puts("Input the first word that matches your six face buttons\n");

    for(size_t i = 0; i < 14; i++)
        printf("  %s\n", row[i]);
}

void
step_2(void)
{
    char response[8] = "";
    char *table[28][15] = {
        { "ready", "yes", "okay", "what", "middle", "left", "press", "right", "blank", "ready", "no", "first", "uhhh", "nothing", "wait" },
        { "first", "left", "okay", "yes", "middle", "no", "right", "nothing", "uhhh", "wait", "ready", "blank", "what", "press", "first" },
        { "no", "blank", "uhhh", "wait", "first", "what", "ready", "right", "yes", "nothing", "left", "press", "okay", "no", "middle" },
        { "blank", "wait", "right", "okay", "middle", "blank", "press", "ready", "nothing", "no", "what", "left", "uhhh", "yes", "first" },
        { "nothing", "uhhh", "right", "okay", "middle", "yes", "blank", "no", "press", "left", "what", "wait", "first", "nothing", "ready" },
        { "yes", "okay", "right", "uhhh", "middle", "first", "what", "press", "ready", "nothing", "yes", "left", "blank", "no", "wait" },
        { "what", "uhhh", "what", "left", "nothing", "ready", "blank", "middle", "no", "okay", "first", "wait", "yes", "press", "right" },
        { "uhhh", "ready", "nothing", "left", "what", "okay", "yes", "right", "no", "press", "blank", "uhhh", "middle", "wait", "first" },
        { "left", "right", "left", "first", "no", "middle", "yes", "blank", "what", "uhhh", "wait", "press", "ready", "okay", "nothing" },
        { "right", "yes", "nothing", "ready", "press", "no", "wait", "what", "right", "middle", "left", "uhhh", "blank", "okay", "first" },
        { "middle", "blank", "ready", "okay", "what", "nothing", "press", "no", "wait", "left", "middle", "right", "first", "uhhh", "yes" },
        { "okay", "middle", "no", "first", "yes", "uhhh", "nothing", "wait", "okay", "left", "ready", "blank", "press", "what", "right" },
        { "wait", "uhhh", "no", "blank", "okay", "yes", "left", "first", "press", "what", "wait", "nothing", "ready", "right", "middle" },
        { "press", "right", "middle", "yes", "ready", "press", "okay", "nothing", "uhhh", "blank", "left", "first", "what", "no", "wait" },
        { "you", "sure", "you are", "your", "you're", "next", "uh huh", "ur", "hold", "what?", "you", "uh uh", "like", "done", "u" },
        { "you are", "your", "next", "like", "uh huh", "what?", "done", "uh uh", "hold", "you", "u", "you're", "sure", "ur", "you are" },
        { "your", "uh uh", "you are", "uh huh", "your", "next", "ur", "sure", "u", "you're", "you", "what?", "hold", "like", "done" },
        { "you're", "you", "you're", "ur", "next", "uh uh", "you are", "u", "your", "what?", "uh huh", "sure", "done", "like", "hold" },
        { "ur", "done", "u", "ur", "uh huh", "what?", "sure", "your", "hold", "you're", "like", "next", "uh uh", "you are", "you" },
        { "u", "uh huh", "sure", "next", "what?", "you're", "ur", "uh uh", "done", "u", "you", "like", "hold", "you are", "your" },
        { "uh huh", "uh huh", "your", "you are", "you", "done", "hold", "uh uh", "next", "sure", "like", "you're", "ur", "u", "what?" },
        { "uh uh", "ur", "u", "you are", "you're", "next", "uh uh", "done", "you", "uh huh", "like", "your", "sure", "hold", "what?" },
        { "what?", "you", "hold", "you're", "your", "u", "done", "uh uh", "like", "you are", "uh huh", "ur", "next", "what?", "sure" },
        { "done", "sure", "uh huh", "next", "what?", "your", "ur", "you're", "hold", "like", "you", "u", "you are", "uh uh", "done" },
        { "next", "what?", "uh huh", "uh uh", "your", "hold", "sure", "next", "like", "done", "you are", "ur", "you're", "u", "you" },
        { "hold", "you are", "u", "done", "uh uh", "you", "ur", "sure", "what?", "you're", "next", "hold", "uh huh", "your", "like" },
        { "sure", "you are", "done", "like", "you're", "you", "hold", "uh huh", "ur", "sure", "u", "what?", "next", "your", "uh uh" },
        { "like", "you're", "next", "u", "ur", "hold", "done", "uh uh", "what?", "uh huh", "you", "like", "sure", "you are", "your" }
    };

    printf("Response? >");
    s2_get_input(response);

    for(size_t i = 0; i < 28; i++)
        if(streq(response, table[i][0])){
            s2_print_row(table[i] + 1);
            return;
        }

    printf("No matches for '%s'. Are you sure you typed it correctly?\n", response);
}

void
usage(void)
{
    puts("Usage: whosonfirst <word on display>");
    puts("Follow the prompts");
    exit(1);
}

int
main(int argc, char **argv)
{
    int response;

    if(argv[1] == NULL)
        usage();

    response = lookup_1(argv[1]);

    if(response == -1){
        printf("Nothing for '%s'. Did you misspell it?\n", argv[1]);
        return 1;
    }

    printf("\"%s\" : %i\n%s", argv[1], response, l1res_str[response]);
    step_2();

    return 0;
}