#include <iostream>
#include <vector>
#include <algorithm>
 
using namespace std;
 
int main(void)
{
  std::vector<std::string> str;
  str.push_back("Vector");
  str.push_back("of");
  str.push_back("four");
  str.push_back("words");
 
  int chars = accumulate(str.begin(), str.end(), 0, [](int sum, const string& elem) {return sum + elem.size();});
 
  std::cout << "Number of characters: " << chars; // 17 characters
 
  // Are there any STL methods that allows me to find 'chars'
  // without needing to write multiple for loops?
 
}

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