Floating Point variables : float Declaration « Data Type « C Tutorial






  1. C Tutorial
  2. Data Type
  3. float Declaration

The numbers 5.5, 8.3, and -12.6 are all floating-point numbers.

Floating-point numbers must contain a decimal point.

So 5.0 is a floating-point number, while 5 is an integer.

You could omit digits before the decimal point and specify a number as .5 instead of 0.5

A floating-point zero should be written as 0.0.

The floating-point number may include an exponent specification of the form:e + exp

For example, 1.2e34 is a shorthand version of 1.2*10^34.









2.18.float Declaration
2.18.1.Floating Point variables
2.18.2.The form of a floating-point declaration
2.18.3.Define float variable and output to the console
2.18.4.Define float in In scientific notation (The E notation)
2.18.5.Define float constant value using Macro
2.18.6.Assignment of an integer expression to a floating-point variable.