New and delete
1.new
Usage: Pointer to the corresponding type of pointer = new type descriptor
a. A machine word length
INT * P;
P = new int;
b. A machine word length, and assign
INT * P;
P = new int (20);
c. Multiple words long, press array or pointer reference
INT * P;
P = new int [20];
2.delete
Usage: delete pointer name
The pointer is an array, and it is also possible to add "[]" before the pointer name.
Delete [n] pointer name
