Maybe so in C, but in C++, stack-allocated container classes, smart pointers, scope guards(!), and (with Qt) the parent-child system can handle almost all cases

Maybe so in C, but in C++, stack-allocated container classes, smart pointers, scope guards(!), and (with Qt) the parent-child system can handle almost all cases. Binary size usually increases but lines of code are less or equal to a C-style solution. It's called RAII, but the main point is really that destructors are automatically called on scope exit.