Tamaño vectorial para bucle
vector<int> arr(100, 0);
for (size_t i = 0; i != arr.size(); ++i){
// do something with arr[i]
}
Light Louse
vector<int> arr(100, 0);
for (size_t i = 0; i != arr.size(); ++i){
// do something with arr[i]
}