Mark Wickens

FACT

Purpose

Returns the factorial of argument.

Format

FACT         ( argument )
               └──┬───┘
         Numeric expression

Example

A = FACT(10)

Parameters

argument: Integer in the range of 0 ≦ argument ≦ 69

Explanation

1. Returns the factorial of the argument. FACT x : x!
2. A fractional value as the argument generates an error.

Sample Program

10  X = 5
20  Y = FACT X
30  PRINT X;"!="; Y

Assigns factorial of the value of variable X to variable Y and displays the result.