Question

In linux, argv[0] by command-line argument can be occupied by _________

(a) ./a.out

(b) ./test

(c) ./fun.out.out

(d) all of the mentioned

I have been asked this question in quiz.

The origin of the question is Command Line Arguments in section Pointers and Arrays in C of C

Answer 1

Correct answer is (d) all of the mentioned

Easy explanation - All the options mentioned (./a.out, ./test, ./fun.out.out) are simply the command without any argument. A command is always stored as argument vector zero i.e., argv[0] always contain the command where as argv[1], argv[2], etc. contains the arguments to the commands, if any.