From 9a164c3f65c01e31a9d1a8578e29b358972ddfed Mon Sep 17 00:00:00 2001
From: Thomas Schmucker <ts@its1.de>
Date: Fri, 1 Dec 2023 21:27:31 +0100
Subject: Lösung für Tag1
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/01a.cpp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 src/01a.cpp

(limited to 'src/01a.cpp')

diff --git a/src/01a.cpp b/src/01a.cpp
new file mode 100644
index 0000000..1fcc763
--- /dev/null
+++ b/src/01a.cpp
@@ -0,0 +1,23 @@
+#include <algorithm>
+#include <fstream>
+#include <iostream>
+#include <string>
+using namespace std;
+
+int
+main()
+{
+	string  digits{ "0123456789" };
+	fstream input{ "data/01a.txt" };
+
+	int sum = 0;
+	for ( string line; input >> line; ) {
+		auto first = find_first_of(begin(line), end(line), begin(digits), end(digits));
+		auto last  = find_first_of(rbegin(line), rend(line), begin(digits), end(digits));
+
+		auto value = (*first - '0') * 10 + (*last - '0');
+
+		sum += value;
+	}
+	cout << sum << endl;
+}
-- 
cgit v1.3