From c851f16d1df21d7579af72d842521b951261b092 Mon Sep 17 00:00:00 2001
From: Vincent Douillet <vincent@vdouillet.fr>
Date: Thu, 2 Dec 2021 22:46:01 +0100
Subject: day 1 & 2

---
 012.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 012.c

(limited to '012.c')

diff --git a/012.c b/012.c
new file mode 100644
index 0000000..ac5b057
--- /dev/null
+++ b/012.c
@@ -0,0 +1,39 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "input.h"
+
+#define INPUT "input/01.txt"
+
+int main() {
+	// lecture du fichier d'entree
+	FILE* file=fopen(INPUT,"r");
+	if(file == NULL) {
+		printf("Le fichier %s n'existe pas\n", INPUT);
+		return -1;
+	}
+	size_t lineCount = count_lines(file);
+	int* input = malloc(lineCount * sizeof(int));
+	if(read_lines_as_int(file, input, lineCount) != 0) {
+		printf("Erreur de parsing du fichier\n");
+		return -1;
+	}
+	// fermeture du fichier
+	fclose(file);
+
+	// calcul des variations de profondeur
+	int result = 0;
+	int windowSum = input[0] + input[1] + input[2];
+	for(size_t i = 1; i < lineCount - 2; i++) {
+		int newWindowSum = input[i] + input[i+1] + input[i+2];
+		if(newWindowSum > windowSum)
+			result++;
+
+		windowSum = newWindowSum;
+	}
+	printf("%d\n", result);
+
+	// nettoyage
+	free(input);
+
+	return 0;
+}
-- 
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