C++ dynamically allocating arrays , is this wrong?

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C++

memory

Hello

I want to take user input and make it the size of a dynamic array,
and i did this as you can see in code below.

the question is: I just wondring if this is right way to do it ?
i have tested and even did a memory leak test but everything was just fine.


Thank you :)

What I have tried:

int userinput = 0;

cout << "Enter array size: " << std::endl:
cin >> userinput;

//I have class named Runner.

Runner * arr = new Runner[userinput];


delete [] arr;