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printf之实数输出,弱智级别的东西,可我就是很陌生-_-

Posted by majia001 at 2006-09-05 10:41:40 on Problem 2988
In Reply To:请用%100000000e输出 Posted by:majia001 at 2006-09-04 20:33:22

虽然举的例子很恶心...(vc6)
**************************************************************************

a=1.234567891011121314e1;

1.234568e+001                  %e
12.345679                      %f
12.3457                        %g

       1.234568e+001           %20e
           12.345679           %20f
             12.3457           %20g

1.23456789101112130000e+001    %.20e
12.34567891011121300000        %.20f
12.345678910111213             %.20g

1.23456789101112130000e+001    %20.20e
12.34567891011121300000        %20.20f
   ~~~~~~~~~~~~~~~~~~~~(20位)
  12.345678910111213           %20.20g
~~~~~~~~~~~~~~~~~~~~(20位)

**************************************************************************

a=1.234567891011121314e14

1.234568e+014                           %e
123456789101112.120000                  %f
1.23457e+014                            %g

       1.234568e+014                    %20e
123456789101112.120000                  %20f
        1.23457e+014                    %20g

1.23456789101112120000e+014             %.20e
123456789101112.12000000000000000000    %.20f
123456789101112.12                      %.20g

1.23456789101112120000e+014             %20.20e
123456789101112.12000000000000000000    %20.20f
                ~~~~~~~~~~~~~~~~~~~~(20位)
  123456789101112.12                    %20.20g
~~~~~~~~~~~~~~~~~~~~(20位)

**************************************************************************

poj上很少有输出double最高精度的情况啊...

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> 虽然举的例子很恶心...(vc6)
> **************************************************************************
> 
> a=1.234567891011121314e1;
> 
> 1.234568e+001                  %e
> 12.345679                      %f
> 12.3457                        %g
> 
>        1.234568e+001           %20e
>            12.345679           %20f
>              12.3457           %20g
> 
> 1.23456789101112130000e+001    %.20e
> 12.34567891011121300000        %.20f
> 12.345678910111213             %.20g
> 
> 1.23456789101112130000e+001    %20.20e
> 12.34567891011121300000        %20.20f
>    ~~~~~~~~~~~~~~~~~~~~(20位)
>   12.345678910111213           %20.20g
> ~~~~~~~~~~~~~~~~~~~~(20位)
> 
> **************************************************************************
> 
> a=1.234567891011121314e14
> 
> 1.234568e+014                           %e
> 123456789101112.120000                  %f
> 1.23457e+014                            %g
> 
>        1.234568e+014                    %20e
> 123456789101112.120000                  %20f
>         1.23457e+014                    %20g
> 
> 1.23456789101112120000e+014             %.20e
> 123456789101112.12000000000000000000    %.20f
> 123456789101112.12                      %.20g
> 
> 1.23456789101112120000e+014             %20.20e
> 123456789101112.12000000000000000000    %20.20f
>                 ~~~~~~~~~~~~~~~~~~~~(20位)
>   123456789101112.12                    %20.20g
> ~~~~~~~~~~~~~~~~~~~~(20位)
> 
> **************************************************************************
> 
> poj上很少有输出double最高精度的情况啊...

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