ask.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>R: Display a prompt and collect the user's response</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link rel="stylesheet" type="text/css" href="../../R.css">
</head><body>
<table width="100%" summary="page for ask {gtools}"><tr><td>ask {gtools}</td><td align="right">R Documentation</td></tr></table>
<h2>Display a prompt and collect the user's response</h2>
<h3>Description</h3>
<p>
Display a prompt and collect the user's response
</p>
<h3>Usage</h3>
<pre>
ask(msg = "Press <RETURN> to continue: ")
</pre>
<h3>Arguments</h3>
<table summary="R argblock">
<tr valign="top"><td><code>msg</code></td>
<td>
Character vetor providing the message to be displayed</td></tr>
</table>
<h3>Details</h3>
<p>
The prompt message will be displayed, and then <code>readLines</code> is
used to collect a single input value (possibly empty), which is then
returned.
</p>
<h3>Value</h3>
<p>
A character scalar containing the input providede by the user.</p>
<h3>Author(s)</h3>
<p>
Gregory R. Warnes <a href="mailto:greg@random-technologies-llc.com">greg@random-technologies-llc.com</a>
</p>
<h3>See Also</h3>
<p>
<code><a href="../../base/html/readLines.html">readLines</a></code>, <code><a href="../../base/html/scan.html">scan</a></code>
</p>
<h3>Examples</h3>
<pre>
# 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")
}
</pre>
<hr><div align="center">[Package <em>gtools</em> version 2.4.0 <a href="00Index.html">Index]</a></div>
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