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#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include "aocdailies.h"
#include "aocutils.h"
void aoc201504(char *data, size_t len) {
data[--len] = 0; // remove newline, adjust `len`
char longkey[128];
unsigned extra = 1;
for (;;) {
sprintf(longkey, "%s%u", data, extra);
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#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "aocdailies.h"
#include "aocutils.h"
void aoc201505(char *data, size_t len) {
(void)len; // unused argument
char *line = strtok(data, "\n"), *vtest;
unsigned nice = 0;
while (line) {
if (!strstr(line, "ab")) {
if (!strstr(line, "cd")) {
if (!strstr(line, "pq")) {
if (!strstr(line, "xy")) {
for (vtest = line; vtest[1]; vtest++) {
if (vtest[0] == vtest[1]) break;
}
if (vtest[0] == vtest[1]) {
unsigned vowels = 0;
for (vtest = line; *vtest; vtest++) {
if (strchr("aeiou", *vtest)) vowels++;
if (vowels == 3) break;
}
nice += (vowels == 3);
}
}
}
}
}
line = strtok(NULL, "\n");
}
printf("There are %u nice strings.\n", nice);
}
void aoc201504(char *data, size_t len) {
data[--len] = 0; // remove newline, adjust `len`
char longkey[128];
unsigned extra = 1;
for (;;) {
sprintf(longkey, "%s%u", data, extra);
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