相关疑难解决方法(0)

在分配给动态分配的元素时,我遇到了我认为基于c ++ 11基于范围的for循环的奇怪行为 std::vector.我有以下代码:

int arraySize = 1000;
std::string fname = "aFileWithLoadsOfNumbers.bin";
CTdata = new std::vector<short int>(arraySize, 0);
std::ifstream dataInput(fname.c_str(), std::ios::binary);
if(dataInput.is_open()
{
    std::cout << "File opened sucessfully" << std::endl;
    for(auto n: *CTdata)
    {
        dataInput.read(reinterpret_cast<char*>(&n), sizeof(short int));
        // If I do "cout << n << endl;" here, I get sensible results   
    }
    // However, if I do something like "cout << CTdata->at(500) << endl;" here, I get 0
}
else
{
    std::cerr << "Failed to open file." << std::endl; …