Question

A double variable stores a value in 64 bits, using some bits for mantissa, some for exponent, and one for sign. which is true about a double variable?

Answer 1

Limited bits may cause some rounding of the mantissa  is true a few double variable

What is a double variable?

A double type variable may be a 64-bit floating data type

The double may be a fundamental data type built into the compiler and used to define numeric variables holding numbers with decimal points. C, C++, C# and lots of other programming languages recognize the double as a type

Why we use double data type?

Double is more precise than float and may store 64 bits, double of the amount of bits float can store. Double is more precise and for storing large numbers, we prefer double float. for instance , to store the annual salary of the CEO of a corporation , double are going to be a more accurate choice.

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