40 lines
1.7 KiB
C++
40 lines
1.7 KiB
C++
|
// fig14_01.cpp
|
||
|
|
// Lambda expressions.
|
||
|
|
#include <algorithm>
|
||
|
|
#include <array>
|
||
|
|
#include <iostream>
|
||
|
|
#include <iterator>
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
std::array values{1, 2, 3, 4}; // initialize values
|
||
|
|
std::ostream_iterator<int> output{std::cout, " "};
|
||
|
|
|
||
|
|
std::cout << "values contains: ";
|
||
|
|
std::ranges::copy(values, output);
|
||
|
|
|
||
|
|
// output each element multiplied by two
|
||
|
|
std::cout << "\nDisplay each element multiplied by two: ";
|
||
|
|
std::ranges::for_each(values, [](auto i) {std::cout << i * 2 << " ";});
|
||
|
|
|
||
|
|
// add each element to sum
|
||
|
|
int sum{0}; // initialize sum to zero
|
||
|
|
std::ranges::for_each(values, [&sum](auto i) {sum += i;});
|
||
|
|
std::cout << "\nSum of value's elements is: " << sum << "\n";
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**************************************************************************
|
||
|
|
* (C) Copyright 1992-2021 by Deitel & Associates, Inc. and *
|
||
|
|
* Pearson Education, Inc. All Rights Reserved. *
|
||
|
|
* *
|
||
|
|
* DISCLAIMER: The authors and publisher of this book have used their *
|
||
|
|
* best efforts in preparing the book. These efforts include the *
|
||
|
|
* development, research, and testing of the theories and programs *
|
||
|
|
* to determine their effectiveness. The authors and publisher make *
|
||
|
|
* no warranty of any kind, expressed or implied, with regard to these *
|
||
|
|
* programs or to the documentation contained in these books. The authors *
|
||
|
|
* and publisher shall not be liable in any event for incidental or *
|
||
|
|
* consequential damages in connection with, or arising out of, the *
|
||
|
|
* furnishing, performance, or use of these programs. *
|
||
|
|
**************************************************************************/
|