data cleaning - Issue in For loop in R -

i new for loops in r. writing code this:

attr <- names(training_data)     attach(training_data) for(i in 1:500) {   temp_var = attr[i] }

the value of attr[1] abcd.

when try displaying values of temp_var should abcd, getting "abcd". quotes:

> print(attr[1]) "abcd"

how can below (without quotes):

> print(attr[1]) abcd

basically, want pass attribute names of table in run time , assign values of vector temp variable. how can achieve this?

since char data type, getting "" around data.

Overvie