ask: Display a prompt and collect the user's response
In gtools: Various R Programming Tools

Description Usage Arguments Details Value Author(s) See Also Examples

Display a prompt and collect the user's response

1	ask(msg = "Press <RETURN> to continue: ", con=stdin())

`msg`	Character vetor providing the message to be displayed
`con`	Character connection to query, defaults to `stdin()`.

The prompt message will be displayed, and then readLines is used to collect a single input value (possibly empty), which is then returned.

In most situations using the default con=stdin() should work properly. Under RStudio, it is necessary to specify con=file("stdin") for proper operaation.

A character scalar containing the input providede by the user.

Gregory R. Warnes greg@warnes.net

readLines, scan

# use default prompt
ask()

silly <- function()
{
   age <- ask("How old aroe you? ")
   age <- as.numeric(age)
   cat("In 10 years you will be", age+10, "years old!\n")
}