Adding #CPP

Adding.cpp

// adding up members of a collection

// accumulate(); uses the '+' operator to add up all members in a collection; sum tool; another template!

 // can also use lambdas instead

 vector<int> a = {1, 2, 3, 4, 5};

 for (int i : a)

 {

 total += i;

 }

 total = accumulate(begin(a), end(a), 0); // much better!