How to print new lines with print in R

Question

I am trying to print a multiline message.

For example,

print("Image not supplied.\nUsage: ./program F=filename",quote=0)

I got the output as follows:

Image not supplied.\nUsage: ./program F=filename

My desired output is as follows:

Image not supplied.
Usage: ./program F=filename

Answer 1

You can use cat() instead of writeLines():

 writeLines("Image not supplied.\nUsage: ./program F=filename")
 Image not supplied.
 Usage: ./program F=filename

You don't have to remember to append a "\n" to the string passed to cat() to get a newline after your message.

 E.g. Compare the same above output:

 cat("Image not supplied.\nUsage: ./program F=filename")
 Image not supplied.
Usage: ./program F=filename>

and

 cat("Image not supplied.\nUsage: ./program F=filename","\n")
Image not supplied.
Usage: ./program F=filename