question

[Geminias]

compiler: mingw

when i compile this source code i get a "warning: no newline at end of file"

the prog still works, but i got this warning and was wondering what it means exactly.

code:

#include <iostream> using namespace std; int division (int x, int z=2) {         int r;         r= x/z;         return (r); } int main () {         std::cout<< division (10)<<std::endl;         std::cout<< "division using both arguments"<<division (20,5);         return 0; }

[Mazer]

Why do you declare that you're using the standard namespace and then go ahead and use "std::" in front of cout? I'm no compiler-error expert, but maybe is't just some crazy problem because of that? (at the very least the code might make a bit more sense).

[[Gandalf]]

Works fine for me.

You should always indent, use proper whitespace, the point of "using namespace std" is so that you don't need to use std::, and your function could be written better as:

code:

int division (int x, int z = 2) {     return (x/z); }

[1of42]

It means what it says. There is no newline at the end of the file. Put one there, and it will compile without warnings.

[Geminias]

lol.. i didn't really know what "use namespace std;" really did, i was just having trouble compiling and i saw this other program that had that so i decided i would just copy it in there LOL.

good to know anyways!

(ps. i do indent and organize my code neatly but when i copied/paste it messed it up)

you say include a newline at the end, like what do you mean just type "newline" at the end lol?

[rizzix]

yes you do.. just that you used [quote] instead of [code] or [syntax="cpp"]

[wtd]

C and C++ are meant to work on many different hardware platforms, running many different operating systems. Many of these operating systems don't consider a text file properly formatted unless it ends in a newline.

This is why GCC (G++ is part of GCC) warns about the lack of a newline.

[rizzix]

wtd wrote:

Many of these operating systems don't consider a text file properly formatted unless it ends in a newline..

huh?

[wtd]

I believe that VMS is such a system. The IO system gets all confused if plain text files don't end in a newline.

[rizzix]

oh. weird.

[Monstrosity_]

Geminias wrote:

when i compile this source code i get a "warning: no newline at end of file" the prog still works, but i got this warning and was wondering what it means exactly.

I dont use much c++, I use c instead. But I do know they have some of the same "rules" in the standards. Somewhere in section 2 should state that having no newline or having a newline preceded by a backslash character at the end of your source file results in undefined behaviour.