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I want to make an array of objects made from class, but i don't know how many of those objects will be in the array. I tried to make it with this code: MyClass a[];, but Qt Creator shows me an error: flexible array member 'a' of type 'MyClass []' with non-trivial destruction and a warning: flexible array members are a C99 feature. The code works with MyClass a[n]; but that is not what i need.

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    Try std::vector<MyClass> a;. Commented Dec 25, 2019 at 17:25

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In C++ you can make usage of vector<MyClass>a. Whenever you need to add any more object to the array use: a.push_back(object)

Basically when you declare a vector, a fix capacity container is created dynamically. Whenever the size of vector crosses the capacity, the entire vector is copied to a new location with increased size.

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