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C++ projects give no output, am I doing something wrong? [message #1064168]

Tue, 18 June 2013 01:48

Nick G

Messages: 3
Registered: June 2013

Junior Member

Downloaded the C/C++ eclipse IDE today, tried out a simple hello world C project, the one the IDE includes worked fine I think. Then I tried the hello world C++ project, it compiled but it would not print on the console in eclipse. Did I do something wrong? I just started a normal C++ project that the ide included and it wont work for some reason. Anyone know what to do?

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Re: C++ projects give no output, am I doing something wrong? [message #1064217 is a reply to message #1064168]

Tue, 18 June 2013 10:15

Norbert Norbert

Messages: 1
Registered: June 2013

Junior Member

Hi there,
I am new to eclipse as well. I seem to have a problem with it all the time. I am trying to make it work for almost two weeks.
I am getting no output for the following code:

#include <stdio.h>
#include <stdlib.h>

int main()
{
  int a;

  printf("Enter an integer\n");
  scanf("%d", &a);

  printf("Integer that you have entered is %d\n", a);

  return 0;
}

There is nothing appearing on the console. If I change the main() to main(void) [i know this is wrong], then I get the following error:

c:/mingw/bin/../lib/gcc/mingw32/4.6.2/../../../../mingw32/bin/ld.exe: cannot open output file *******.exe: Permission denied

and this error persists even if I change the code back to normal.
I struggle to sort the eclipse out and make it work as I need it for my engineering project. I can program in Matlab so it won't be hard to do C. Just a little practice. If you cannot help me with this problem then just, please, tell me the name of other program I can use for C. Making eclipse work for two weeks makes me sick now.

Thanks in advance

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Re: C++ projects give no output, am I doing something wrong? [message #1064364 is a reply to message #1064217]

Tue, 18 June 2013 22:01

Joost Kraaijeveld

Messages: 273
Registered: July 2009

Senior Member

I assume that you read the FAQ:
http://wiki.eclipse.org/CDT/User/FAQ#Eclipse_console_does_not_show_output_on_Windows
?

Cheers,

Joost

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Re: C++ projects give no output, am I doing something wrong? [message #1064376 is a reply to message #1064364]

Wed, 19 June 2013 02:12

Nick G

Messages: 3
Registered: June 2013

Junior Member

Yep, when I put the

setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);

At the start of main like it tells me to it gives me like 4 errors.

EDIT: Those errors being _IONBF stdout, stderr, and setvbuf were not declared in this scope.

[Updated on: Wed, 19 June 2013 02:29]

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