How works Random intern?

[coradi]

How works the Random function?
Is it the same system as srand() from C?

[jamie]

srand  in C is not Random in pascal.

Srand in C is RandSeed in Pascal


Random will return any number from 0 to the number you input.

if you call Random without any number then it assumes the value 1.0 and there for the return
value will be any number starting from 0 to .99999999

 So you could use that to multiply a REAL number

 Result := 10000 * Random;

 That will return a number between 0..9.999; and it will come with fractons for example
   3.56789 etc

If you supply a number that is not a REAL then it becomes a integer type on return..

 Random(100) will return any number from 0 to 99

[furious programming]

You can check how Random works, just use the Find declaration option and analyze the code of the genrand_MT19937 function. It is used by every Random function, no matter what data type returns.