System.Random(Integer) Method
Version: Available or changed with runtime version 1.0.
Returns a pseudo-random number.
Syntax
Number := System.Random(MaxNumber: Integer)
Note
This method can be invoked without specifying the data type name.
Parameters
MaxNumber
Type: Integer
The largest acceptable number. In effect, you are setting a range from one (1) to the number that you specify with the MaxNumber parameter.
Return Value
Number
Type: Integer
Remarks
If MaxNumber is negative it acts as a positive.
If MaxNumber is zero, this method always returns 1.
A number is always chosen from the same set of numbers. Use Randomize Method) to generate a new set of numbers.
Example
This example shows how to generate a pseudo-random number. The value of the variable Number2 is positive though the value of MaxNumber is negative and the value of the variable Number3 is always 1 because MaxNumber is 0.
var
x: Integer;
y: Integer;
z: Integer;
Number1: Integer;
Number2: Integer;
Number3: Integer;
Text000: Label 'Number1 = %1, Number2 = %2, Number3 = %3';
begin
x := 100; // x is assigned a positive value.
y := -100; // y is assigned a negative value.
z := 0; // z is assigned zero.
Number1 := Random(x);
Number2 := Random(y);
Number3 := Random(z);
Message(Text000, Number1, Number2, Number3);
end;
See Also
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