CPSC 120 Demonstrate declaring and statically initializing a 2D std::array of string.

cpsc120_2D_array.cc

// Gist https://gist.github.com/697c2c169ebd5cdef9a3eb7d8c0bee1e

#include <array>
#include <iostream>
#include <string>
#include <vector>

int main(int argc, char const *argv[]) {
  std::vector<std::string> arguments{argv, argv + argc};
  // Arrays are row major order like a movie theater. This means the first index
  // is the row and the second index is the column (or seat). All the types must
  // be the same in an array. This is a declaration for a 2 x 4 array - 2 rows,
  // 3 columns. Notice the double braces.
  std::array<std::array<std::string, 3>, 2> sandwiches{
      {{"Pastrami on Rye", "Hot Dog", "Burrito"}, {"YES", "YES", "NO"}}};
  if (arguments.size() < 2) {
    std::cout << "Please provide a sandwich name on the command line.\n";
    std::cout << "For example: ./a.out \"Pastrami on Rye\"\n";
    std::cout << "Exiting.\n";
    return 1;
  }
  int index{0};
  bool was_found{false};
  // Search for the sandwich passed on the command line
  for (auto element : sandwiches) {
    // row 0 has the sandwich names
    if (sandwiches.at(0).at(index) == arguments.at(1)) {
      was_found = true;
      break;
    }
    index += 1;
  }
  // If the second row is "YES" then it is a sandwich, else it is not a
  // sandwich.
  bool is_sandwich{sandwiches.at(1).at(index) == "YES"};
  if (was_found && is_sandwich) {
    std::cout << sandwiches.at(0).at(index) << " is considered a sandwich.\n";
  } else if (was_found && !is_sandwich) {
    std::cout << sandwiches.at(0).at(index)
              << " is NOT considered a sandwich.\n";
  } else {
    std::cout << "Sorry, I don't know about \"" << arguments.at(1) << "\"\n";
    std::cout << "I can't tell you if it is a sandwich or not.\n";
    std::cout << "Exiting.\n";
    return 1;
  }
  return 0;
}