readline {base} | R Documentation |
readline
reads a line from the terminal
readline(prompt = "")
prompt |
the string printed when prompting the user for input.
Should usually end with a space " " . |
The prompt string will be truncated to a maximum allowed length, normally 256 chars (but can be changed in the source code).
A character vector of length one.
readLines
for reading text lines of connections,
including files.
fun <- function() { ANSWER <- readline("Are you a satisfied R user? ") if (substr(ANSWER, 1, 1) == "n") cat("This is impossible. YOU LIED!\n") else cat("I knew it.\n") } fun()