How does the wc -c in linux work

Question

Why the number of characters is 4?

echo abc|wc -c

Output

4

The output should be 3 because the number of characters is 3.

Answer 1

The working of it is based on counting the newline, so please try:-

[~]> echo -n abc|wc -c 3

Also, note that -n tells the echo not to print a newline.