C++ traversal of for loop

Method 1(index-based iteration) std::vector<int> v = { 1, 2, 3, 4, 5}; for (size_t i = 0; i < v.size(); ++i) { std::cout << v[i]; } Method 2(range-for loop) std::vector<int> v = { 1, 2, 3, 4, 5}; for (const int& i : v) // Access by const referen...