What does dn mean in c language

dn is the type qualifier representing double-precision floating point in C language. It specifies that a variable or constant can store double-precision floating-point numbers, with higher precision than single-precision floating-point numbers.

What does dn mean in C language?

dn is the type qualifier representing double-precision floating point type in C language.

Detailed explanation:

• Double precision means that the precision of floating point type is twice that of single precision.
• Floating point type is a number type that can represent fractions and decimals.
• Type qualifier is used to specify the type of a variable or constant, for example, int represents an integer, and float represents a single-precision floating point number.

Therefore, a variable or constant of type dn can store a double-precision floating-point number, which has higher precision than a single-precision floating-point number.

Example:

##double dn_variable = 3.14159265358979323846;

This statement declares a variable named

dn_variable double-precision floating-point variable and initialize it to the value of pi.

The above is the detailed content of What does dn mean in c language. For more information, please follow other related articles on the PHP Chinese website!