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Subject: | XploRe: Learning Guide |
See XploRe: |
Quantlet: | quant14 | |
Description: | Square root with error, if the argument is negative. | |
Download: | quant14.xpl |
proc() = test(x) ; defines a procedure error(x<0,"Negative argument!") ; displays an error box containing the ; specified text and stops the program ; in case x is negative sqrt(x) ; computes the square root in case the ; preceding command did not lead to ; a break of the program endp ; end of the procedure ; test(-4) ; runs the procedure with value -4
Subject: | XploRe: Learning Guide |
See XploRe: |