Stack and stack description

The attributes of Delphi are too complex. Change your mind first and then continue learning.
ProgramThe required memory space is divided into heap and stack );

Heap is a free storage zone and stack is an automatic storage zone;

You must manually apply for and manually release the heap. the stack is automatically applied for and released;

When heap is used, "Memory leakage" will occur if only application is not released ";

Elements that do not need to be applied for or released, such as variables and structures (record), are stored and stacks );

If you need create and free objects, getmem and freemem pointers, and so on, the objects are stored in heap );

Stack is a little faster than heap.