System.Random
Delphi
function Random(const ARange: Integer): Integer;
function Random: Extended;
C++
extern DELPHI_PACKAGE int __fastcall Random(const int ARange)/* overload */;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | System.pas System.hpp |
System | System |
Description
Generates random numbers within a specified range.
In Delphi code, Random returns a random number within the range 0 <= X < Range. If Range is not specified, the result is a real-type random number within the range:
0 <= X < 1.
To initialize the random number generator, add a single call Randomize or assign a value to the RandSeed variable before making any calls to Random.
Note: Because the implementation of the Random function may change between compiler versions, we do not recommend using Random for encryption or other purposes that require reproducible sequences of pseudo-random numbers.