[R] Importing a CSV file

[sezgin ozcan]

I have been trying to import a csv file to r. but I get the same message 
everytime. the message is

Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") :
  cannot open file 'Users:/sezginozcan/Downloads/beer.data.csv': No such file 
or directory

I use mac.
I tried this command also
a<-read.table("clipboard",sep=”\t”,row.names=1,header=T)
Error: unexpected input in "a<-read.table("clipboard",sep=‚"

I will appreciate if you help me before I get crazy.
thank you

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