RE: [Dev-C++] Problems using float variables with DevC v4

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

The first printf() produces to me:

4.000000e+000   3.141593e+000 


which is what is expected i guess.


Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
* Alternative URL: http://run.to/noicys


> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of aloysiojr01
> Sent: Friday, May 17, 2002 5:06 PM
> To: dev...@li...
> Subject: [Dev-C++] Problems using float variables with DevC v4
> 
> 
> Hello guys, 
> 
> I have problems using float variables using DevC version 
> 4. I don't get correct answers. Please see the code:
> 
> #include <stdio.h>
> #include <stdlib.h>
> #include <math.h>
> #define pi  3.1415927
> #define precisao 0.01
> 
> int main(int argc, char *argv[])
> {
>   float valor = 4.0;
>   int numerador = 4;
>   int denominador = 3;
>   int sinal = -1;
> 
>   printf("%e\t%e\t",valor,pi);
> 
>   do
>   {
>    valor+= sinal*(numerador/denominador);
>    sinal*=-1;
>    denominador+=2;
>    printf("%d\t%d\n",denominador,sinal);
>   }while(fabs((valor-pi))>precisao);
> 
>   printf("%4.2f\n",valor);
>   system("pause");
> 
> 
>   return 0;
> }
> 
> At the first printf i get wrong values. Am i forgetting 
> sth? Is there any compiler option to be set? 
> 
> Please help me.
> 
> Best Regards, 
> 
> Aloysio Souza.