Reorganized project structure

.clang-format

@@ -0,0 +1,12 @@
+---
+Language: Cpp
+BasedOnStyle: WebKit
+SpaceAfterTemplateKeyword: false
+AlignEscapedNewlines: true
+AlignTrailingComments: true
+BreakBeforeInheritanceComma: true
+BreakConstructorInitializers: BeforeComma
+IndentPPDirectives: AfterHash
+BreakBeforeBraces: Custom
+BraceWrapping:
+    AfterFunction: true

CMakeLists.txt

@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(aoc2019)
+
+set(CMAKE_CXX_STANDARD 14)
+
+add_executable(aoc2019
+        src/Solution.h src/main.cpp src/Day1Solution.cpp src/Day1Solution.h src/Day2Solution.cpp src/Day2Solution.h)

Makefile

@@ -1,15 +0,0 @@
-CC=g++
-CFLAGS=-Wall
-SRC_DIR=src
-OUTPUT_DIR=output
-
-all: day1 day2
-
-day1:
-	$(CC) $(CFLAGS) $(SRC_DIR)/day1.cpp -o $(OUTPUT_DIR)/$@
-
-day2:
-	$(CC) $(CFLAGS) $(SRC_DIR)/day2.cpp -o $(OUTPUT_DIR)/$@
-
-clean:
-	rm $(OUTPUT_DIR)/*

src/Day1Solution.cpp

@@ -1,10 +1,10 @@
-#include <iostream>
-#include <fstream>
-#include <string>
-#include <vector>
+#include "Day1Solution.h"
 #include <cmath>
+#include <fstream>
+#include <iostream>
+#include <string>
 
-int main()
+void Day1Solution::run()
 {
     std::string line;
     std::ifstream input_file("../input/day1.txt");
@@ -12,16 +12,13 @@ int main()
     auto part1_sum = 0;
     auto part2_sum = 0;
 
-    if (input_file.is_open())
-    {
-        while (getline(input_file, line))
-        {
+    if (input_file.is_open()) {
+        while (getline(input_file, line)) {
             auto val = std::stoi(line);
             auto calculated_value = std::floor(val / 3) - 2;
 
             part1_sum += calculated_value;
-            while (calculated_value > 0)
-            {
+            while (calculated_value > 0) {
                 part2_sum += calculated_value;
                 calculated_value = std::floor(calculated_value / 3) - 2;
             }
@@ -29,8 +26,6 @@ int main()
         input_file.close();
     }
 
-    std::cout << "Part 1 Sum: " << part1_sum << std::endl;
-    std::cout << "Part 2 Sum: " << part2_sum << std::endl;
-
-    return 0;
+    std::cout << "Part 1 Answer: " << part1_sum << std::endl;
+    std::cout << "Part 2 Answer: " << part2_sum << std::endl;
 }

src/Day1Solution.h

@@ -0,0 +1,11 @@
+#ifndef AOC2019_DAY1SOLUTION_H
+#define AOC2019_DAY1SOLUTION_H
+
+#include "Solution.h"
+
+class Day1Solution : public Solution {
+public:
+    void run() override;
+};
+
+#endif //AOC2019_DAY1SOLUTION_H

src/Day2Solution.cpp

@@ -1,23 +1,40 @@
-#include <iostream>
+#include "Day2Solution.h"
 #include <fstream>
-#include <string>
-#include <vector>
-#include <cmath>
+#include <iostream>
 
-int run_program(std::vector<int> program, int noun, int verb)
+void Day2Solution::run()
 {
-    int program_counter = 0;
-    bool running = true;
+    std::string line;
+    std::ifstream input_file("../input/day2.txt");
+    std::vector<int> program;
+
+    if (input_file.is_open()) {
+        while (getline(input_file, line, ',')) {
+            program.push_back(std::stoi(line));
+        }
+
+        auto result1 = run_program(program, 12, 2);
+        std::cout << "Part 1 Answer: " << result1 << std::endl;
+
+        auto result2 = search_program(program, 19690720);
+        std::cout << "Part 2 Answer: " << result2 << std::endl;
+
+        input_file.close();
+    }
+}
+
+int Day2Solution::run_program(std::vector<int> program, int noun, int verb)
+{
+    auto program_counter = 0;
+    auto running = true;
     program[1] = noun;
     program[2] = verb;
-    while (running)
-    {
+    while (running) {
         auto opcode = program[program_counter++];
         auto val1 = program[program[program_counter++]];
         auto val2 = program[program[program_counter++]];
 
-        switch (opcode)
-        {
+        switch (opcode) {
         case 1: // addition
             program[program[program_counter++]] = val1 + val2;
             break;
@@ -33,43 +50,15 @@ int run_program(std::vector<int> program, int noun, int verb)
     return program[0];
 }
 
-int search_program(std::vector<int> program, int expected_value)
+int Day2Solution::search_program(std::vector<int> program, int expected_value)
 {
-    for (auto noun = 0; noun < 99; noun++)
-    {
-        for (auto verb = 0; verb < 99; verb++)
-        {
+    for (auto noun = 0; noun < 99; noun++) {
+        for (auto verb = 0; verb < 99; verb++) {
             auto value = run_program(program, noun, verb);
-            if (value == expected_value)
-            {
+            if (value == expected_value) {
                 return 100 * noun + verb;
             }
         }
     }
     return -1;
-}
-
-int main()
-{
-    std::string line;
-    std::ifstream input_file("../input/day2.txt");
-    std::vector<int> program;
-
-    if (input_file.is_open())
-    {
-        while (getline(input_file, line, ','))
-        {
-            program.push_back(std::stoi(line));
-        }
-
-        auto result1 = run_program(program, 12, 2);
-        std::cout << "Part 1 Result: " << result1 << std::endl;
-
-        auto result2 = search_program(program, 19690720);
-        std::cout << "Part 2 Result: " << result2 << std::endl;
-
-        input_file.close();
-    }
-
-    return 0;
 }

src/Day2Solution.h

@@ -0,0 +1,16 @@
+#ifndef AOC2019_DAY2SOLUTION_H
+#define AOC2019_DAY2SOLUTION_H
+
+#include "Solution.h"
+#include <vector>
+
+class Day2Solution : public Solution {
+public:
+    void run() override;
+
+private:
+    int run_program(std::vector<int> program, int noun, int verb);
+    int search_program(std::vector<int> program, int expected_value);
+};
+
+#endif //AOC2019_DAY2SOLUTION_H

src/Solution.h

@@ -0,0 +1,11 @@
+#ifndef AOC2019_SOLUTION_H
+#define AOC2019_SOLUTION_H
+
+#include <string>
+
+class Solution {
+public:
+    virtual void run() = 0;
+};
+
+#endif //AOC2019_SOLUTION_H

src/main.cpp

@@ -0,0 +1,21 @@
+#include "Day1Solution.h"
+#include "Day2Solution.h"
+#include "Solution.h"
+#include <iostream>
+#include <map>
+
+int main()
+{
+    std::map<int, Solution*> solutions = {
+        { 1, new Day1Solution },
+        { 2, new Day2Solution }
+    };
+
+    for (const auto& [day, solution] : solutions) {
+        std::cout << "Day " << day << std::endl;
+        solution->run();
+        std::cout << "--------------------------------------------------------------------" << std::endl;
+    }
+
+    return 0;
+}