aoc/src/2015/01.c

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

#include "input.h"

void advent2015day01(void) {
  char *input = get_input("input/2015/01");
  char *c = input;
  int f = 0, b = 0, s = 1;

  while (*c != '\0') {
    if (*c == '(') {
      ++f;
    } else {
      --f;
    }

    if (f == -1 && b == 0) {
      b = s;
    }

    ++c;
    ++s;
  }

  printf("%d\n%d\n", f, b);
  free(input);
}