From 736823f313bd2e00e49a1b52aaf0ea68a79db438 Mon Sep 17 00:00:00 2001
From: Vincent Douillet <vincent@vdouillet.fr>
Date: Fri, 3 Dec 2021 17:01:37 +0100
Subject: improve input handling & merge part 1 and 2 for the first days

---
 01.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 01.c

(limited to '01.c')

diff --git a/01.c b/01.c
new file mode 100644
index 0000000..33c52aa
--- /dev/null
+++ b/01.c
@@ -0,0 +1,43 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "input.h"
+
+#define INPUT "input/01.txt"
+
+void part1(struct input_int* input) {
+	// compute depth variations
+	int result = 0;
+	for(size_t i = 1; i < input->line_count; i++) {
+		if(input->lines[i] > input->lines[i-1])
+			result++;
+	}
+	printf("%d\n", result);
+}
+
+void part2(struct input_int* input) {
+	// compute depth variations
+	int result = 0;
+	int windowSum = input->lines[0] + input->lines[1] + input->lines[2];
+	for(size_t i = 1; i < input->line_count - 2; i++) {
+		int newWindowSum = input->lines[i] + input->lines[i+1] + input->lines[i+2];
+		if(newWindowSum > windowSum)
+			result++;
+
+		windowSum = newWindowSum;
+	}
+	printf("%d\n", result);
+}
+
+int main() {
+	// read input
+	struct input_int input;
+	input_int_read(&input, INPUT);
+
+	// do stuff
+	part1(&input);
+	part2(&input);
+
+	// cleanup & exit
+	input_int_free(&input);
+	return 0;
+}
-- 
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