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I am extremely new to R. This simple code prints two outputs:

ec_lineal = function(a,b){
  print(sprintf('%i x + %i = 0',a,b))
  paste(sprintf('x ='), -b / a)
}

ec_lineal(5,3)

[1] "5 x + 3 = 0"
[1] "x = -0.6"

When I knit the code to HTML, I get separate boxes for each of the outputs:

Is there any way to combine both outputs in a single white box? Maybe editing the code chunk header ```{r} ?

I am using R 3.6.3 and the latest version of RStudio in Windows 10.

Thank you.

Phil
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pypau
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1 Answers1

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You may use cat.

ec_lineal = function(a,b) {
  cat(sprintf('%i x + %i = 0',a,b), 
      paste(sprintf('x ='), -b / a),
      sep="\n")
}

ec_lineal(5,3)
# 5 x + 3 = 0
# x = -0.6
jay.sf
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  • thank you, this will do! just to make sure, what cat() allows me to do is to print things inside one print() but on different lines, right? – pypau Aug 08 '20 at 12:21
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    @pypau Yeah, it's actually the `sep=` parameter; when you define `"\n"` (i.e. new line) it separates each string defined in `cat` with that. For the difference between `cat` and `print` also see: https://stackoverflow.com/a/31843744/6574038 – jay.sf Aug 08 '20 at 12:28
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    You're welcome, consider to [accept answer](https://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work/5235#5235). – jay.sf Aug 09 '20 at 10:41