From baf4910870a6e8999802b9a4a22eabd4142a34e3 Mon Sep 17 00:00:00 2001 From: Bond_009 Date: Thu, 1 Dec 2022 22:30:22 +0100 Subject: Move all Advent of Codes into one repo --- 2020/04/part1.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 2020/04/part1.c (limited to '2020/04/part1.c') diff --git a/2020/04/part1.c b/2020/04/part1.c new file mode 100644 index 0000000..b4a3b8e --- /dev/null +++ b/2020/04/part1.c @@ -0,0 +1,68 @@ +#include +#include +#include +#include + +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(int argc, char *argv[]) +{ + printf("%i", count_valid_passports(argv[argc - 1])); +} -- cgit v1.2.3