Why can't I even get "Hello, World!" to run right?

Question

So I'm all ready to start learning C. I have a book. I downloaded Dev-C++. It's installed, and I type the source code just as I see it:
#include

int main(void)
{
printf("Hello, World!\n");
return 0;
}

I run it through the compiler and run the program. Nothing. A little window--looks like a DOS prompt--pops up and disappears before I can see if anything is written there.

What am I doing wrong? Could it be a setting on the compiler? Could it not be linking the way it should?

Answer 1

That's do be expected, and it is working correctly. You need to pause the program so that it doesn't automatically close the console as soon as the program completes execution:

#include

int main(void)

{

printf("Hello, World!\n");

getchar(); /*wait for the user to input something (or just press enter) to finish*/

return 0;

}





Another way to deal with this, is use the program as you have it, and run from the command line (start -> run -> cmd).



EDIT:

As far as a compiler, there is always g++ (the GNU C++ compier). If you're on Linux, that's probably already there for you. Otherwise, you can use it through Cygwin:

http://www.cygwin.com/

Which can also get you vi and emacs, which are both very good text editors.

Also, here's another nice text editor to take a look it (this one with a GUI unlike vi or emacs), Notepad++:

http://notepad-plus.sourceforge.net/uk/site.htm

I think you might find it a lot nicer than textpad for writing code (since that's what notepad++ is designed for)

Answer 2

Why can't I even get "Hello, World!" to run right?



So I'm all ready to start learning C. I have a book. I downloaded Dev-C++. It's installed, and I type the source code just as I see it:

#include



int main(void)

{

printf("Hello, World!\n");

return 0;

}



I run it through the compiler and run the program. Nothing. A little window--looks like a DOS prompt--pops up and disappears before I can see if anything is written there.



What am I doing wrong? Could it be a setting on the compiler? Could it not be linking the way it should?

Answer 3

try this:



#include



int main(void)

{

printf("Hello, World!\n");

getchar();

return 0;

}



That should cause it to execute and then pause.



Your problem is, this is a command line app, and it is showing up in that little blip of a screen, you should be running it from the command line as well. no idea how to do this in windows, linux user sorry.

Answer 4

You should run the executable from an already open cmd window, that way it'll stay open. I'm sure it's working - it's just closing before you can see what it's printed.

Answer 5

confusing matter check out onto google just that can assist