1.迭代器

    for (std::vector<int>::iterator it = vecTest.begin(); it != vecTest.end(); ++it){tempNum = *it;}

2.C++11 新增关键字auto

 for (auto it : vecTest){tempNum = it;}

3.对C念念不舍的童鞋们习惯的数组写法

  for (size_t i = 0; i < maxCount; i++){tempNum = vecTest[i];}