Specifier | Description |
float | Allocates 4 bytes of data storage. |
double | Allocates 8 bytes of data storage. |
long double | Normally
allocates 8 bytes of data storage. If the ldbl128
or longdouble compiler options are in
effect, 16 bytes of data storage are allocated. Allocates 16 bytes of data storage. |
Notes:
|
To declare a data object having a floating-point type, use the float specifier.
The float specifier has the form:
The declarator for a simple floating-point declaration is an identifier. You can initialize a simple floating-point variable with a float constant or with a variable or expression that evaluates to an integer or floating-point number. The storage class of a variable determines how you initialize the variable.
The following example defines the identifier pi as an object of type double:
double pi;
The following example defines the float variable real_number with the initial value 100.55:
static float real_number = 100.55f;
The following example defines the float variable float_var with the initial value 0.0143:
float float_var = 1.43e-2f;
The following example declares the long double variable maximum:
extern long double maximum;
The following example defines the array table with 20 elements of type double:
double table[20];