problem022.cpp

#include <algorithm>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>

int alphabeticalValue(const std::string& name)
{
 int val = 0;
 for (int i = 0; i < name.size(); ++i) {
 val += name[i] - 'A' + 1;
 }
 return val;
}

int nameScoreTotal(std::vector<std::string> names)
{
 std::sort(names.begin(), names.end());
 int total = 0;
 for (int i = 0; i < names.size(); ++i) {
 int score = alphabeticalValue(names[i]) * (i + 1);
 total += score;
 }
 return total;
}

int main(int argc, char* argv[])
{
 if (argc < 2) {
 std::cout << "Usage: " << argv[0] << " <input>\n";
 return 0;
 }
 std::ifstream file(argv[1]);
 if (!file.is_open()) {
 std::cerr << "Cannot open " << argv[1] << '\n';
 return EXIT_FAILURE;
 }
 std::vector<std::string> names;
 std::string line;
 while (std::getline(file, line)) {
 std::istringstream iss(line);
 std::string token;
 while (std::getline(iss, token, ',')) {
 names.push_back(token.substr(1, token.size() - 2));
 }
 }
 std::cout << "Answer: " << nameScoreTotal(names) << '\n';
 return 0;
}