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Object Pascal

function Random(const ARange: Integer): Integer;
function Random: Extended;


extern DELPHI_PACKAGE int __fastcall Random(const int ARange)/* overload */;


Type Visibility Source Unit Parent
function public
System System


Generates random numbers within a specified range.

In Object Pascal 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.

See Also

Code Examples