// fig06_01.cpp
// Initializing an array's elements to zeros and printing the array.
#include <format> // C++20: This will be #include <format>
#include <iostream>
#include <array>

int main() {
   std::array<int, 5> values{}; // values is an array of 5 int values

   // initialize elements of array values to 0        
   for (size_t i{0}; i < values.size(); ++i) {
      values[i] = 0; // set element at location i to 0
   }

   std::cout << std::format("{:>7}{:>10}\n", "Element", "Value");

   // output each array element's value
   for (size_t i{0}; i < values.size(); ++i) {
      std::cout << std::format("{:>7}{:>10}\n", i, values[i]);
   }

   std::cout << std::format("\n{:>7}{:>10}\n", "Element", "Value");

   // access elements via the at member function
   for (size_t i{0}; i < values.size(); ++i) {
      std::cout << std::format("{:>7}{:>10}\n", i, values.at(i));
   }

   for (auto i : values){
       std::cout << std::format("{:>7}{:>8}\n", i, values.at(i));
   }
   // accessing an element outside the array's bounds with at
   values.at(10); // throws an exception
}

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