For what purpose does double pointers is used?

Answer 1

I think single and double precision (float and double) correspond to 32 and 64 bit, all stored into HEX. (Triple for 128 bit)There are larger amount of data and accuracy of up to...nth digit? that can be stored in Base 2 the larger it is. All characters have a corresponding code to it in HEX. It's important because by storing the memory, it speeds the loading of the instructions up as it doesn't need to be converted, in comparison towards needing it to go through the compiler before the variables get to be loaded. Kind of like how it may take up more space in the EBCDIC, since the instructions doesn't need to be converted and it takes faster to do so. Idk that's what CS1 taught me, but that's at the tip of my head over the IEEE 754 Standard.

As data gets larger and storage devices advance, the need for larger and more powerful processors (CPU) would be in demand. So that's where DAT also comes in, it specifies how data will be stored, used and processed. I think.

Answer 2

for chaining purpose and holds the address of the pointers

Answer 3

for holing address of a pointer to another ...or for 2D array