在运行时将指针推到矢量C ++

Question

My program will read input data that contains N lines. Each line contains data that will be assigned to a single object. Since the number of objects required will be determined at runtime, I plan to allocate space for them on the heap.

I want to include a vector of pointers to these objects. My first approach was to use a loop running N times, and allocate the space with,

Customer* cust_i = new Customer

Then use customer_vector.push_back(cust_i) to populate the vector.

Seems clumsy, and given that I don't understand dynamic memory allocation in C++ all that well, I would appreciate any advice approaching this problem a better way.

Thanks.

Answer 1

You don't actually need to store the pointers to Customer
Since vector is already a dynamic container you can do

std::vector<Customer> customer_vec;

// read file
// ...
// example assuming Customer has a constructor taking 2 strings
customer_vec.emplace_back( "foo", "bar" );