c-resources/CPlusPlus20ForProgrammers-m.../examples/ch06/fig06_04.cpp

42 lines
1.7 KiB
C++

// fig06_04.cpp
// Set array values to the even integers from 2 to 10.
#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;
}
*/
for ( int index{0}; int& value : values) {
value = 2 + 2 * index;
index++;
}
// output contents of array values in tabular format
for (const int& value : values) {
std::cout << value << "\n";
}
std::cout << '\n';
}
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