Differences between long pointers and pointers in C ++

Early 16-bit computers started a certain segment of memory and the pointer within the addressing range of 2 ^ 16 was called a short pointer, A long pointer is called a long pointer whose addressing range exceeds the preceding range. Because the addressing long pointer needs to change the content of the segment register, there are some differences with the short pointer.

Later, 32 used the "flat" Memory Model for the computer, and there was no need to modify the segment register for addressing in the 2 ^ 32 address range (that is, the memory address in the 4 GB range, no one is talking about Long and Short pointers.

Now this is an obsolete concept-basically.