Parse board and instructions

Author: fwcd

day15/src/day15.cpp

@@ -1,6 +1,38 @@
 #include <iostream>
+#include <fstream>
+#include <string>
+
+int main(int argc, char *argv[]) {
+  if (argc == 1) {
+    std::cerr << "Usage: " << argv[0] << " <path to input>" << std::endl;
+    return 1;
+  }
+
+  std::vector<std::string> board;
+  std::string instructions;
+
+  {
+    std::ifstream file;
+    file.open(argv[1]);
+
+    bool in_board = true;
+    for (std::string line; std::getline(file, line);) {
+      if (in_board) {
+        if (line.empty()) {
+          in_board = false;
+        } else {
+          board.push_back(line);
+        }
+      } else {
+        instructions += line;
+      }
+    }
+  }
+
+  for (const std::string &line : board) {
+    std::cout << "Line: " << line << std::endl;
+  }
+  std::cout << "Instructions: " << instructions << std::endl;
 
-int main() {
-  std::cout << "Hello" << std::endl;
   return 0;
 }