dev-cpp-users

[Dev-C++] Newbie

[Randy H. <ran...@rc...>]

Hi..I'm just getting started and I understand that when you want to halt
the screen in order to read the result in DOS you must enter
system("PAUSE");
Why does this work sometimes and other times I get a compilation error
  " 18: implicit declaration of function `int system(...)' "

Here is a sample no-brainer program I coded that produces just that
error...
Thanks!

#include <stdio.h>

 main()
{
float perCent,result,num;

printf("Enter the number you want a percentage of :\n");
scanf("%f",&num);

printf("Enter the percentage of that number you want calculated :\n");
scanf("%f", &perCent);

  result = (num * perCent)/100;

     printf("%f  percent of  %f  =  %f", perCent,num,result);

             system("PAUSE");

            return 0;

  }

[Dev-C++] Newbie

[Kris N. <kna...@gm...>]

Dear,

I downloaded and installed dev-C++ version 4.9.8.0 but cannot compile 
anything. I get the following message:

cannot find entry symbol_mainCRTstartup; defaulting to 00401000
linker error: undefined reference to 'strcpy'
etc.

I can compile files with g++ version 2.95.3-5 in Cygwin which I used 
uptill now. The progra contains nothing special, reading ascii data, 
some basic calculations, export again+.

Any help would be greatly appreciated.

Kris

Re: [Dev-C++] Newbie

[Andre` N. C. <ca...@op...>]

well, for one you need to have int main() or the incorect void main() but
never just main()
at the end of your program you returned 0 so your main function has to be an
int.

Your other problem is you need the correct header file.  I'm not sure what
it is..
I cant remember been a while since DOS land!:)

Randy Hust wrote:

> Hi..I'm just getting started and I understand that when you want to halt
> the screen in order to read the result in DOS you must enter
> system("PAUSE");
> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
>
> Here is a sample no-brainer program I coded that produces just that
> error...
> Thanks!
>
> #include <stdio.h>
>
>  main()
> {
> float perCent,result,num;
>
> printf("Enter the number you want a percentage of :\n");
> scanf("%f",&num);
>
> printf("Enter the percentage of that number you want calculated :\n");
> scanf("%f", &perCent);
>
>   result = (num * perCent)/100;
>
>      printf("%f  percent of  %f  =  %f", perCent,num,result);
>
>              system("PAUSE");
>
>             return 0;
>
>   }
>
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users

Re: [Dev-C++] Newbie

[Simon R H. <sim...@kc...>]

try

#include <iostream.h>





On Tue, 27 Mar 2001 07:25:22 -0800 Randy Hust <ran...@rc...> 
wrote:

> 
> Hi..I'm just getting started and I understand that when you want to halt
> the screen in order to read the result in DOS you must enter
> system("PAUSE");
> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
> 
> Here is a sample no-brainer program I coded that produces just that
> error...
> Thanks!
> 
> #include <stdio.h>
> 
>  main()
> {
> float perCent,result,num;
> 
> printf("Enter the number you want a percentage of :\n");
> scanf("%f",&num);
> 
> printf("Enter the percentage of that number you want calculated :\n");
> scanf("%f", &perCent);
> 
>   result = (num * perCent)/100;
> 
>      printf("%f  percent of  %f  =  %f", perCent,num,result);
> 
>              system("PAUSE");
> 
>             return 0;
> 
>   }
> 
> 
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users


----------------------
Simon R Hillman
sim...@kc...

Re: [Dev-C++] Newbie

[Francesco T. <tor...@un...>]

> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
> 
The prototype of the function system is contained in the header stdlib.h,
thus you should add 

#include <stdlib.h>

to your program.

Hope this helps


Francesco

Re: [Dev-C++] Newbie

[Ray W. <ra...@in...>]

You need to include "#include <stdlib.h>" , no quotes, to get it to work.
ray.



At 07:25 AM 3/27/01 -0800, you wrote:
>
>Hi..I'm just getting started and I understand that when you want to halt
>the screen in order to read the result in DOS you must enter
>system("PAUSE");
>Why does this work sometimes and other times I get a compilation error
>  " 18: implicit declaration of function `int system(...)' "
>
>Here is a sample no-brainer program I coded that produces just that
>error...
>Thanks!
>
>#include <stdio.h>
>
> main()
>{
>float perCent,result,num;
>
>printf("Enter the number you want a percentage of :\n");
>scanf("%f",&num);
>
>printf("Enter the percentage of that number you want calculated :\n");
>scanf("%f", &perCent);
>
>  result = (num * perCent)/100;
>
>     printf("%f  percent of  %f  =  %f", perCent,num,result);
>
>             system("PAUSE");
>
>            return 0;
>
>  }
>
>
>
>_______________________________________________
>Dev-cpp-users mailing list
>Dev...@li...
>http://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>
>
Ray Witter

RE: [Dev-C++] Newbie

[Ioannis V. <no...@ya...>]

#include <stdlib.h>


Ioannis
 
* Ioannis Vranos
* Programming pages: http://members.nbci.com/noicys
* Alternative URL: http://run.to/noicys


> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...]On Behalf Of Randy Hust
> Sent: Tuesday, March 27, 2001 5:25 PM
> To: dev...@li...
> Subject: [Dev-C++] Newbie
> 
> 
> 
> Hi..I'm just getting started and I understand that when you want to halt
> the screen in order to read the result in DOS you must enter
> system("PAUSE");
> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
> 
> Here is a sample no-brainer program I coded that produces just that
> error...
> Thanks!
> 
> #include <stdio.h>
> 
>  main()
> {
> float perCent,result,num;
> 
> printf("Enter the number you want a percentage of :\n");
> scanf("%f",&num);
> 
> printf("Enter the percentage of that number you want calculated :\n");
> scanf("%f", &perCent);
> 
>   result = (num * perCent)/100;
> 
>      printf("%f  percent of  %f  =  %f", perCent,num,result);
> 
>              system("PAUSE");
> 
>             return 0;
> 
>   }
> 
> 
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> 

Re: [Dev-C++] Newbie

[Linda H. <lz...@sp...>]

Try int main () and a couple of cin.get(); before the return 0.

Linda

---------------------------------
----- Original Message ----- 
From: "Randy Hust" <ran...@rc...>
To: <dev...@li...>
Sent: Tuesday, March 27, 2001 10:25 AM
Subject: [Dev-C++] Newbie


> 
> Hi..I'm just getting started and I understand that when you want to halt
> the screen in order to read the result in DOS you must enter
> system("PAUSE");
> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
> 
> Here is a sample no-brainer program I coded that produces just that
> error...
> Thanks!
> 
> #include <stdio.h>
> 
>  main()
> {
> float perCent,result,num;
> 
> printf("Enter the number you want a percentage of :\n");
> scanf("%f",&num);
> 
> printf("Enter the percentage of that number you want calculated :\n");
> scanf("%f", &perCent);
> 
>   result = (num * perCent)/100;
> 
>      printf("%f  percent of  %f  =  %f", perCent,num,result);
> 
>              system("PAUSE");
> 
>             return 0;
> 
>   }
> 
> 
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users