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#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
bool is_valid_passport(const char *pass)
{
return strstr(pass, "byr:")
&& strstr(pass, "iyr:")
&& strstr(pass, "eyr:")
&& strstr(pass, "hgt:")
&& strstr(pass, "hcl:")
&& strstr(pass, "ecl:")
&& strstr(pass, "pid:");
}
int count_valid_passports(const char *filename)
{
FILE *file = fopen(filename, "r");
// Include space for newline and string terminator
char buffer[128] = { 0 };
bool has_byr = false;
bool has_iyr = false;
bool has_eyr = false;
bool has_hgt = false;
bool has_hcl = false;
bool has_ecl = false;
bool has_pid = false;
int correct = 0;
while (fgets(buffer, 128, file)) {
if (buffer[0] == '\n') {
if (has_byr && has_iyr && has_eyr && has_hgt && has_hcl && has_ecl && has_pid) {
correct++;
}
has_byr = false;
has_iyr = false;
has_eyr = false;
has_hgt = false;
has_hcl = false;
has_ecl = false;
has_pid = false;
}
has_byr = has_byr || strstr(buffer, "byr:");
has_iyr = has_iyr || strstr(buffer, "iyr:");
has_eyr = has_eyr || strstr(buffer, "eyr:");
has_hgt = has_hgt || strstr(buffer, "hgt:");
has_hcl = has_hcl || strstr(buffer, "hcl:");
has_ecl = has_ecl || strstr(buffer, "ecl:");
has_pid = has_pid || strstr(buffer, "pid:");
}
if (has_byr && has_iyr && has_eyr && has_hgt && has_hcl && has_ecl && has_pid) {
correct++;
}
fclose(file);
return correct;
}
int main()
{
printf("%i", count_valid_passports("input"));
}
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