Object-Oriented Programming in C++

Code display of PL10/lambda1.cpp

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// PL10/lamda1.cpp
// Application of lambda closure
// Adapted  from https://msdn.microsoft.com/en-us/library/dd293608.aspx
// Niels Walet. Last edited 06/01/2022
#include<algorithm>
#include<iostream>
#include<vector>
int main()
{
  std::vector<int> v;
  for (int i{}; i < 10; i++) v.push_back(i+1);
  // Count the number of even numbers in the vector
  int even_count = 0;
  std::for_each(v.begin(), v.end(),
        [&even_count] (int n)
        {std::cout << n;
          if (n % 2 == 0) {
            std::cout << " is even " << std::endl;
            ++even_count;
          } else {
            std::cout << " is odd " << std::endl;
          }
        });
  // Print the count of even numbers to the console.
  std::cout << "There are " << even_count
            << " even numbers in the vector." << std::endl;
}
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