day8.cpp

#include <fstream>
#include <iostream>
#include <set>
#include <sstream>

std::set<std::string> variables;
std::ostringstream proc;

int main(int argc, char* argv[])
{
  if (argc < 2) return 1;

  std::ifstream input(argv[1]);

  if (!input) return 2;

  std::cout <<"#include <stdio.h>\n";
  std::cout <<"\n";
  std::cout <<"int main() {\n";
  std::cout <<"  int maxmax = 0;\n";

  std::string instmt;
  while (std::getline(input, instmt)) {
    std::istringstream inss(instmt);

    std::string var;
    std::string op;
    int         arg;
    std::string f;
    std::string cndvar;
    std::string cndop;
    int         cndval;

    inss >> var;
    inss >> op;
    inss >> arg;
    inss >> f;
    inss >> cndvar;
    inss >> cndop;
    inss >> cndval;

    if (variables.insert(cndvar).second)
      std::cout << "  int " << cndvar << " = 0;\n";

    if (variables.insert(var).second)
      std::cout << "  int " << var << " = 0;\n";

    std::cout << "  if(" << cndvar << " " << cndop << " " << cndval << ") {\n";
    std::cout << "    " << var << (op == "inc"? " += " : " -= ") << arg << ";\n";
    std::cout << "    " << "if(" << var << " > maxmax) maxmax = " << var << ";\n";
    std::cout << "  }\n";
    
  }

  std::cout << "int max = " << *variables.begin() << ";\n";

  for(const std::string& var : variables) {
    std::cout << "if(max < " << var << ") max = " << var << ";\n";
  }

  std::cout << "printf(\"max: %d\\n\", max);\n";
  std::cout << "printf(\"maxmax: %d\\n\", maxmax);\n";

  std::cout << "}\n";

}