What is the difference between type double and long double?

Question

Floating type numbers

Answer 1

Per the C++ standard, there might not be any difference. However, if there is, the long double will be bigger. Float, double, and long double can all be the same. The only guarentee is float <= double <= long double in storage size. Usually, the compiler will provide three different sizes because the hardware supports them. If it only has two, float will be the smaller one and the doubles the bigger. If it has one, they are all the same.

Answer 2

The term 'word' as applied in computing is composed of two bytes usually used to store integers. floating point types are usually store in double word or in four bytes. long double is eight bytes to store larger flooating point values. it is an issue of precision.

Answer 3

Read on pointers as well. It can help you understand the importance of these data types

Answer 4

Thank you :)

Answer 5

It's my next lesson...

Answer 6

Pointers are very important. Understanding it will also help you deal with parameter passing with functions

Answer 7

Double takes 8 and long double more than 8 i think