1 files changed, 10 insertions, 6 deletions

diff --git a/2023/flake.nix b/2023/flake.nix
index 7a8ee2b..cc32737 100644
--- a/2023/flake.nix
+++ b/2023/flake.nix
@@ -62,12 +62,9 @@
               #include <iostream>
               #include <fstream>
 
-              int main(int argc, char* argv[])
+              bool parse(const char* file)
               {
-                  int answer{};
-
-                  std::ifstream input{ argv[1] };
-                  if (input.is_open())
+                  if (std::ifstream input{ file }; input.is_open())
                   {
                       std::string line;
                       while (not std::getline(input,line).eof())
@@ -75,7 +72,14 @@
                           /* ... */
                       }
                   }
-                  input.close();
+                  return false;
+              }
+
+              int main(int argc, char* argv[])
+              {
+                  int answer{};
+
+                  auto input = parse(argv[1]);
 
                   /* ... */