What exactly does the new operator do?

The new operator can do: 1. Allocate memory space: the new operator will allocate a memory space of sufficient size in the heap memory for storing object data; 2. Call the constructor: allocate memory After the space is allocated, the new operator will call the object's constructor and initialize the object's member variables; 3. Return pointer: The new operator returns a pointer to the newly allocated memory space, through which the object can be accessed and manipulated.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

The new operator is an operator that dynamically allocates space in memory to create objects. Specifically, the following steps can be completed using the new operator:

1. Allocate memory space: The new operator will allocate a memory space of sufficient size in the heap memory for storing object data.

2. Call the constructor: After allocating memory space, the new operator will call the object's constructor to initialize the object's member variables.

3. Return pointer: The new operator returns a pointer to the newly allocated memory space through which the object can be accessed and manipulated.

Objects created using the new operator need to manually release the memory, otherwise memory leaks will occur. The operation of releasing memory is to use the delete operator, which calls the object's destructor and releases the memory space occupied by the object.

It should be noted that in C, objects created using the new operator must be released using the delete operator. In C language, you can use the malloc function for memory allocation and the free function for memory release. .

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