Passing arguments with next line to C program

Question

I am trying to run a C program in Ubuntu via command prompt, I can run successfully using

./aaa<arg_file.txt

Content of arg_file.txt
a
bb
ccc

It displays the result successfully, but this time I do not want to use the txt file to pass the parameters, instead I want to pass all the arguments using one single line, how can I represent the next line character in the argument field?

Thanks all for the advice!

Answer 1

If your shell is Bash or compatible, use the <<[SENTINEL] syntax:

h2co3-macbook:~ h2co3$ cat <<EOF
> abc
> def
> ghi
> EOF
abc
def
ghi
h2co3-macbook:~ h2co3$

Answer 2

Just pass with spaces inbetween like

./aaa a bb ccc

In C program, argv[0] will be ur exe name. then

argv[1] = "a"
argv[2] = "bb"
argv[3] = "ccc"

will be there.