Question
> printmessage <- function(x) {
+ if(x > 0)
+ print("x is greater than zero")
+ else
+ print("x is less than or equal to zero")
+ invisible(x)
+ }
> printmessage(NA)a.
Error
b.
Warning
c.
Messages
d.
x is greater than zero
Posted under Scoping Rules and Debugging R Programming
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