I started to learn the R language, but I didn't suceed to use an external file.
 
Let say that I have an excel file called "test1.xls" in the directory 
"C:/program files/R/rw2000/external_files" that looks like that:
 
name  mark
  yair      80
 yosi      70  ...
 
In the appropriate directory I wrote this:
 
x<-read.delim("test1.xls")
 
or this:
 
x<-read.csv("test1.xls")
 
but I got:
 
[1] X......
<0 rows> (or 0-length row.names)
 
way cannot I read the file? what is the appropriate command for reading an excel file?

I looked at the site of R-project but I didn't find a suitable comand.

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