Creating a vector from a file in R

I am new to R and my question should be trivial. I need to create a word cloud from a txt file containing the words and their occurrence number. For that purposes I am using the snippets package. As it can be seen at the bottom of the link, first I have to create a vector (is that right that words is a vector?) like bellow.

> words <- c(apple=10, pie=14, orange=5, fruit=4)

My problem is to do the same thing but create the vector from a file which would contain words and their occurrence number. I would be very happy if you could give me some hints.

Moreover, to understand the format of the file to be inserted I write the vector words to a file.

> write(words, file="words.txt")

However, the file words.txt contains only the values but not the names(apple, pie etc.).

$ cat words.txt
10 14 5 4

Thanks.