What does new operator mean?

The new operator is a keyword used to dynamically allocate memory space in programming languages. The function of the new operator is to allocate memory for an object or data type in the heap (Heap) and return a pointer to the memory space. The general syntax of the new operator is "new type; new type[size];". The new operator returns a pointer to the newly allocated memory space through which the object or array can be accessed and manipulated.

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

The new operator is a keyword used to dynamically allocate memory space in programming languages. Its function is to allocate memory for an object or data type in the Heap and return a pointer to the memory space.

Use the new operator to dynamically create objects or allocate arrays at runtime without determining their size or number at compile time. This is useful for situations where flexible memory management is required, such as dynamically creating objects, creating dynamically sized arrays, or allocating large amounts of data on the heap.

The general syntax of the new operator is as follows:

new type;new type[size];

Among them, type represents the object or data type to be created, and size represents the size of the array to be allocated (optional). The new operator returns a pointer to the newly allocated memory space through which the object or array can be accessed and manipulated.

It should be noted that after using the new operator to allocate memory, you need to use the corresponding delete operator or delete[] operator to release the memory to avoid memory leaks. Otherwise, the allocated memory will be occupied until the end of the program and will not be reclaimed by the system.

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