Documentation

Mathematica Teacher's Edition

Built-in Functions

Input and Output

Data Reading Options

Number

Number represents an exact integer or an approximate real number in Read.

An integer is returned if no explicit decimal point is present.
Approximate real numbers can be given in C or Fortran forms, such as 2.4E5 or -3.4e-4.
See The Mathematica Book on the web: Section 2.11.8.
See also: Real.