Dynamically apply for memory and release, and dynamically apply for memory release

Dynamically apply for memory and release, and dynamically apply for memory release

• Apply for new

1 int * pint = new int (1024); // open up a piece of memory space to save an int type variable. The initial value of this bucket is 1024 (the initial value can be left empty ), new returns the address of the memory space and assigns the address to the pointer variable pint2 int * pia = new int [4]; // opens up a memory space, used to save an array with four int elements. This memory address is returned and assigned to pia.

• Release delete

Delete pint; delete [] pia; // release the Array