Say I have a list of variables, 

listVar <- list(age,sex)

I am looking for a way to either

1- create a vector c("age","sex") from it, or
2- get the names one by one in a for loop such as these

    a)  for (i in 1:length(listVar)) rownames(result)[i] <- ???

    b)  for(i in listVar) print (variable's name)


Any help much appreciated.
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