fig06_04.cpp

// fig06_04.cpp
// Set array values to the even integers from 2 to 10.
#include <fmt/format.h>
#include <iostream>
#include <array>

int main() {
   // constant can be used to specify array size
   constexpr size_t arraySize{5}; // must initialize in declaration

   std::array<int, arraySize> values{}; // array values has 5 elements

   for (size_t i{0}; i < values.size(); ++i) { // set the values
      values.at(i) = 2 + 2 * i;
   }

   // output contents of array values in tabular format
   for (const int& value : values) {
      std::cout << fmt::format("{}  ", value);
   }

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

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