creating strings in R containing special/dedicated characters

Question

I am trying to join strings containing dedicated characters, and obviously it gives me errors. Here's to illustrate:

v <- c(1:3)
FILE = '\\main.folder\subfolder1\subfolder2\file01.txt'

From there, I'd like to have an output that looks like this:

[1] "FILE = '\\main.folder\subfolder1\subfolder2\file1.txt'"
[2] "FILE = '\\main.folder\subfolder1\subfolder2\file2.txt'"
[3] "FILE = '\\main.folder\subfolder1\subfolder2\file3.txt'"

Here's my code: str_c("FILE = '\\main.folder\subfolder1\subfolder2\file", v, ".txt'") Apparently, it's the backslash (and I'm guessing ' too) that's causing the error. What's the workaround for this? Thanks!

Answer 1

We can use sprintf

sprintf("FILE = '\\main.folder\\subfolder1\\subfolder2\\file%d.txt'", v)  
#[1] "FILE = '\\main.folder\\subfolder1\\subfolder2\\file1.txt'" "FILE = '\\main.folder\\subfolder1\\subfolder2\\file2.txt'"
#[3] "FILE = '\\main.folder\\subfolder1\\subfolder2\\file3.txt'"

data

v <- 1:3