Formatted numeric output: Difference between revisions
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review →Pascal |
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00007.125 |
00007.125 |
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</pre> |
</pre> |
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=={{header|Ada}}== |
=={{header|Ada}}== |
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<lang ada>with Ada.Text_Io.Editing; use Ada.Text_Io.Editing; |
<lang ada>with Ada.Text_Io.Editing; use Ada.Text_Io.Editing; |
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00007.125 |
00007.125 |
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7.125 |
7.125 |
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| ⚫ | |||
<lang cpp>#include <iostream> |
<lang cpp>#include <iostream> |
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#include <iomanip> |
#include <iomanip> |
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00007.125 |
00007.125 |
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</pre> |
</pre> |
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=={{header|Free Pascal}}== |
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''See [[#Pascal|Pascal]]'' |
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=={{header|F_Sharp|F#}}== |
=={{header|F_Sharp|F#}}== |
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As a debugging feature, you can drop down to [[C]] language printf formatting by giving -1 for the width and a format string for the precision. |
As a debugging feature, you can drop down to [[C]] language printf formatting by giving -1 for the width and a format string for the precision. |
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<lang logo>print form 7.125 -1 "|%09.3f| ; 00007.125</lang> |
<lang logo>print form 7.125 -1 "|%09.3f| ; 00007.125</lang> |
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=={{header|Lua}}== |
=={{header|Lua}}== |
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<lang lua>function digits(n) return math.floor(math.log(n) / math.log(10))+1 end |
<lang lua>function digits(n) return math.floor(math.log(n) / math.log(10))+1 end |
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=={{header|Pascal}}== |
=={{header|Pascal}}== |
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<lang pascal>procedure writeInFixedFormat(n: real); |
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See [[Formatted_numeric_output#Delphi | Delphi]] |
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const |
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wholeNumberPlaces = 5; |
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fractionalPlaces = 3; |
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zeroDigit = '0'; |
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negative = '-'; |
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var |
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signPresent: boolean; |
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i: integer; |
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begin |
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// NOTE: This does not catch “negative” zero. |
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signPresent := n < 0.0; |
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if signPresent then |
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begin |
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write(negative); |
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n := abs(n); |
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end; |
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// determine number of leading zeros |
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i := wholeNumberPlaces; |
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if n > 0 then |
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begin |
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i := i - trunc(ln(n) / ln(10)); |
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end; |
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for i := i - 1 downto succ(ord(signPresent)) do |
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begin |
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write(zeroDigit); |
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end; |
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// writes n with |
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// - at least wholeNumberPlaces characters in total |
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// - exactly fractionalPlaces post-radix digits |
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// rounded |
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write(n:wholeNumberPlaces:fractionalPlaces); |
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end;</lang> |
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=={{header|Perl}}== |
=={{header|Perl}}== |
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