无法解决R中的简单If-Else函数错误

Question

I am just trying to gain some knowledge about how to write functions in R. I created a simple If-else function which basically takes numerical input in function call.

If user gives n=1 , iris dataframe is to be created and for any other number mtcars .

df1<-iris
df2<-mtcars
run<-function(n){
  if(n==1){
   data1<-df1
  } else {
    data1<-df2
  }
}

run(1)

But somehow this is just not working. I am missing something here.

Answer 1

What @C_Z_ said

df1<-iris
df2<-mtcars
run<-function(n, df1, df2){
  if(n==1){
   data1<-df1
  } else {
    data1<-df2
  }
return(data1)
}