Loop through a folder and list the files

I have a folder named'sample' and it contains three files I want to write a shell script which will read these files inside the sample folder and post them using curl in an http site

I wrote the following for the listing of the files inside the folder

for dir in sample/*; do
        echo $dir;
        done

But the following result comes to me

sample/log

sample/clk

sample/demo

It is attaching the parent folder in it. I want the output as follows (without the parent folder name)

log

clk

demo

How should you do it?

Use basename to strip the leading path off of the files.

for file in sample/*; do
    echo "$(basename "$file")"
done

But why not?

( cd sample; ls )