My first C++ program failed on me revisted

[Web Developer]

complete code:

#include <iostream>

int main()
{
std::cout << "Hello World" << '\n';
return 0;
}


I'm using Dev C++ version 5.0 to compile the program. I don't get any errors
when compiling, but when I execute the program a DOS windows opens and then
closes straight after. I assume that this means there is nothing outputted
on screen. Any help appreciated.


WD

 

[Artie Gold]

complete code:

#include <iostream>

int main()
{
std::cout << "Hello World" << '\n';
return 0;
}


I'm using Dev C++ version 5.0 to compile the program. I don't get any errors
when compiling, but when I execute the program a DOS windows opens and then
closes straight after. I assume that this means there is nothing outputted
on screen. Any help appreciated.

Your code is fine. It's just that after writing the message to cout
there was
nothing for the program to do -- so it went away.

You could out a call to std::getchar() before the `return' statement to
keep it around.

BTW - this is not a C++ question; it's related to your IDE.

HTH,
--ag

 

[Noah Roberts]

You could out a call to std::getchar() before the `return' statement to

keep it around.

Or learn how the command line works as any worthwhile developer should.
It is not hard to learn and is absolutely necissary for anyone serious
about learning to program for or administer systems. Not learning to
use the command line is like turning bolts with a pair of pliers - it
might work much of the time but you would certainly be better off
learning to use a wrench.

NR

 

[Artie Gold]

Or learn how the command line works as any worthwhile developer should.
It is not hard to learn and is absolutely necissary for anyone serious
about learning to program for or administer systems. Not learning to
use the command line is like turning bolts with a pair of pliers - it
might work much of the time but you would certainly be better off
learning to use a wrench.

NR

No argument there! ;-)

--ag

 

[Web Developer]

Or learn how the command line works as any worthwhile developer should.
It is not hard to learn and is absolutely necissary for anyone serious
about learning to program for or administer systems. Not learning to
use the command line is like turning bolts with a pair of pliers - it
might work much of the time but you would certainly be better off
learning to use a wrench.

NR

how does using a cmmand line fix my problem?

WD

 

[Web Developer]

how does using a cmmand line fix my problem?

WD

Nevermind that comment. Although, it is a nusiance to go to DOS and run the
program everytime you change some code. Maybe the Dev C++ has something like
command line?


WD

 

[Nils Petter Vaskinn]

Nevermind that comment. Although, it is a nusiance to go to DOS and run
the program everytime you change some code. Maybe the Dev C++ has
something like command line?

Make a function void pause() that prints something like "Program done
press any key to exit" and reads a character before it returns. Put that
at the end of your main.

Make a second function void my_exit(int ec) that calls pause and then
exit(ec), use that wherever you would use exit.

Remove the functions and the calls to them if you're releasing your
programs.

hth
NPV