Words Me

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

#define MAX_WORDS 10000
#define MAX_LEN 100
#define PICK_COUNT 36   // word count

unsigned int secure_rand(unsigned int max) {
    unsigned int r;
    FILE *f = fopen("/dev/urandom", "rb");
    if (!f) {
        perror("urandom");
        exit(1);
    }
    fread(&r, sizeof(r), 1, f);
    fclose(f);
    return r % max;
}

int main(void) {
    FILE *f = fopen("words.txt", "r");
    if (!f) {
        perror("words.txt");
        return 1;
    }

    char words[MAX_WORDS][MAX_LEN];
    int count = 0;

    while (count < MAX_WORDS && fgets(words[count], MAX_LEN, f)) {
        words[count][strcspn(words[count], "\n")] = '\0';
        count++;
    }
    fclose(f);

    if (count == 0) {
        fprintf(stderr, "No words found\n");
        return 1;
    }

    for (int i = 0; i < PICK_COUNT; i++) {
        int idx = secure_rand(count);
        printf("%s", words[idx]);

        if ((i + 1) % 36 == 0) {
            putchar('\n');   // newline after every XX words
        } else {
            putchar(' ');    // space between words
        }
    }

    return 0;
}