Why argc and argv

Discussion with Experts. Amit Kumar. Set, toggle and clear a bit in C July 10, Dutch National Flag problem - Sort 0, 1, 2 in an array March 30, Mouse Rollover Zoom Effect on Images.

Important functions in math. Formatting the print using printf in C. Controlling the Outline Position with outline-offset. Prime numbers using Sieve Algorithm in C. Editor's Picks. Python Decorators - The simple way. We exploit the latter feature to copy the string contents only and stop at terminating null byte. Consequently, we chain two memccpy calls to copy both arguments and print the concatenated string to the stdout. DelftStack is a collective effort contributed by software geeks like you.

If you like the article and would like to contribute to DelftStack by writing paid articles, you can check the write for us page. John Boker John Boker Add a comment. Two additional things to note: These are the only two standard-mandated signatures for main. If a particular platform accepts extra arguments or a different return type, then that's an extension and should not be relied upon in a portable program. Toby Speight Toby Speight If we're being technical, basic. So, they're not exactly non-conforming.

Thanks for the nice pedantry Justin. Answer updated to be more correct. Azeem 7, 4 4 gold badges 20 20 silver badges 34 34 bronze badges. Argv[] always has argv[arg] as a null pointer. In the case of Bash, it is often maybe always the pathname of the executable, but Bash is not the only program that executes other programs.

It cannot take any command line arguments. When run like such: myprogram arg1 arg2 arg3 argc , or Argument Count, will be set to 4 four arguments , and argv , or Argument Vectors, will be populated with string pointers to "myprogram", "arg1", "arg2", and "arg3". Nick Gerakines Nick Gerakines 1, 1 1 gold badge 11 11 silver badges 20 20 bronze badges.

Community Bot 1 1 1 silver badge. Chris Becke Chris Becke Might want to put void in I don't know if all older versions of C allow void functions to have an empty parameter list in declaration. Only in C this does have a difference, but only in declarations, not in definition. Ruslan Sorry, I posted this when I was just learning C, and I might have read that in very early versions of C the void is required.

Don't quote me on that, and I now know it is a slightly foolish comment. It can't hurt, though. The Overflow Blog. Does ES6 make JavaScript frameworks obsolete?