Question

EDIT Sorry! This code actually works correctly; I was looking at the wrong error. Thanks to everyone for their input.

I want to be able to directly access the last element of a vector<> in C++. Currently, I push_back() a temporary variable (of a custom type), however I’d much rather put data straight into the vector. The following code is an example of what I’d like to do. It won’t compile, but it does a better job of explaining than I do:

typedef struct
{
    float colour[3];
}
CustomType

vector<CustomType> customArray;

customArray.push_back(CustomType());

// The hard part - won't work
customArray.back().colour[0] = 1;

I’d like some help with the last line; what’s the correct syntax to put data into the most-recently pushed back element in a vector?

Answer 1

Why won’t

customArray.back().colour[0] = 1;

work?

It does work! Try again 🙂