Core Function Printf

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	<pre>		<pre>
−	SPrintf( <expression>, <expressions>... )	+	Printf( <format control>, <params> )
	</pre>		</pre>
	=== Description ===		=== Description ===
−	Create a formatted string.	+	Prints a formatted string (similar to the C printf() function).
−	=== expression ===	+	=== Parameters ===
−	The format string and flags to use (see Remarks).	+	==== format control ====
−	==== expressions ====	+	See [[Core Function SPrintf|SPrintf( <format control>, <params> )]] for format control.
−	Variables that will be output according to the "Format Control".	+	==== params ====
		+
		+	See [[Core Function SPrintf|SPrintf( <format control>, <params> )]] for params.
	=== Return Value ===		=== Return Value ===
−	Success: Returns the formatted string.	+	None.
−		+
−	Failure: Returns an empty string.	+
−		+
−	=== Format Control ===	+
−		+
−	==== Strings ====	+
−		+
−	There really isn’t any formatting within a string, beyond it’s alignment. Alignment works for any argument being printed.	+
−		+
−	Example:	+
−		+
−	<syntaxhighlight lang="sputnik">	+
−	Printf("->{0,10}<-\n", "Hello")	+
−	Printf("->{0,-10}<-\n", "Hello")	+
−	; Generates	+
−	; ->    Hello<-	+
−	; ->Hello    <-	+
−	</syntaxhighlight>	+
−		+
−	==== Numbers ====	+
−		+
−	Basic number formatting specifiers:	+
−		+
−	{| border="1" align="left" style="text-align:center;"	+
−	|Specifier	+
−	|Type	+
−	|Format	+
−	|Output with (double)1.42	+
−	|Output with (int)1337	+
−	|Output with (int)-12400	+
−	|-	+
−	|c	+
−	|Currency	+
−	|{0:c}	+
−	|$1.42	+
−	|$1,337	+
−	| -$12,400	+
−	|-	+
−	|d	+
−	|Decimal (Whole number)	+
−	|{0:d}	+
−	|	+
−	|1337	+
−	| -12400	+
−	|-	+
−	|e	+
−	|Scientific	+
−	|{0:e}	+
−	|1.420000e+000	+
−	|1.337000e+003	+
−	| -1.240000e+004	+
−	|-	+
−	|f	+
−	|Fixed point	+
−	|{0:f}	+
−	|1.42	+
−	|1337.00	+
−	| -12400.00	+
−	|-	+
−	|g	+
−	|General	+
−	|{0:g}	+
−	|1.42	+
−	|1337	+
−	| -12400	+
−	|-	+
−	|n	+
−	|Number with commas for thousands	+
−	|{0:n}	+
−	|1.42	+
−	|1,337	+
−	| -12,400	+
−	|-	+
−	|r	+
−	|Round trippable	+
−	|{0:r}	+
−	|1.42	+
−	|	+
−	|	+
−	|-	+
−	|x	+
−	|Hexadecimal	+
−	|{0:x4}	+
−	|1.42	+
−	|0539	+
−	|cf90	+
−	|}	+
−		+
−		+
−		+
−		+
−		+
−		+
−		+
−		+
−		+
−		+
−		+
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−	Custom number formatting:	+
−		+
−	{| border="1" align="left" style="text-align:center;"	+
−	|Specifier	+
−	|Type	+
−	|Example	+
−	|Output with (double)1500.42	+
−	|Note	+
−	|-	+
−	|0	+
−	|Zero placeholder	+
−	|{0:00.0000}	+
−	|1500.4200	+
−	|Pads with zeroes.	+
−	|-	+
−	|#	+
−	|Digit placeholder	+
−	|{0:(#).##}	+
−	|(1500).42	+
−	|	+
−	|-	+
−	|.	+
−	|Decimal point	+
−	|{0:0.0}	+
−	|1500.4	+
−	|	+
−	|-	+
−	|,	+
−	|Thousand separator	+
−	|{0:0,0}	+
−	|1,500	+
−	|Must be between two zeroes.	+
−	|-	+
−	|,.	+
−	|Number scaling	+
−	|{0:0,.}	+
−	|2	+
−	|Comma adjacent to Period scales by 1000.	+
−	|-	+
−	|%	+
−	|Percent	+
−	|{0:0%}	+
−	|150042%	+
−	|Multiplies by 100, adds % sign.	+
−	|-	+
−	|e	+
−	|Exponent placeholder	+
−	|{0:00e+0}	+
−	|15e+2	+
−	|Many exponent formats available.	+
−	|-	+
−	|;	+
−	|Group separator	+
−	|see below	+
−	|see below	+
−	|see below	+
−	|}	+
−		+
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−		+
−	The group separator is especially useful for formatting currency values which require that negative values be enclosed in parentheses. This currency formatting example at the bottom of this document makes it obvious:	+
−		+
−	==== Dates ====	+
	=== Remarks ===		=== Remarks ===
−	Warning: If you expect to use int, byte, float etc in the params then you must cast it as such for example:	+	This is basically a wrapper for the [[Core Function SPrintf|SPrintf( <format control>, <params> )]] function so it will do exactly what that function does but print the result instantly and return no string.
−		+
−	<syntaxhighlight lang="sputnik">	+
−	$myint = 100	+
−	$val = SPrintf("Value is 0x'{0:x}'", (int)$myint) ; The (int) will only take in $myint	+
−		+
−	$myint = 100	+
−	$myint2 = 100	+
−	$val = SPrintf("Value is 0x'{0:x}'", (int)($myint + $myint2)) ; The (int) will now take in $myint AND $myint2	+
−	</syntaxhighlight>	+
−	Note how $myint was cast as an int? using (int)$myint this is vital since if you dont do that it might send a string or a float you never really know with $variables so its best to cast it.	+
−		+
−	There is an alternative method example:	+
−		+
−	<syntaxhighlight lang="sputnik">	+
−	$myint = 100	+
−	$val = SPrintf("Value is 0x'{0:x}'", int($myint))	+
−	</syntaxhighlight>	+
−		+
−	Its up to you to decide which one to use.	+
−		+
−	If you wish to capture the output of Printf to create strings:	+
−		+
−	Go see [[Core Function SPrintf|SPrintf( <expression>, <expressions>... )]] to Printf to strings.	+
−	Anything thats valid for Printf to print to console window is also valid for SPrintf to use to create strings.	+	See [[Core Function SPrintf|SPrintf( <format control>, <params> )]] for remarks.
	=== Example ===		=== Example ===
−	<syntaxhighlight lang="sputnik">	+	See [[Core Function SPrintf|SPrintf( <format control>, <params> )]] for example.
−	Printf("Value is 0x'{0:x}'", (int)100) ; Prints 0x64 since the {0:x} is telling it to place param 0 as :x meaning hex	+
−	</syntaxhighlight>	+
	[[Category:Core Function]]		[[Category:Core Function]]

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Latest revision as of 12:38, 14 June 2015

Printf( <format control>, <params> )

Contents 1 Description 2 Parameters 2.1 format control 2.2 params 3 Return Value 4 Remarks 5 Example

Description

Prints a formatted string (similar to the C printf() function).

Parameters

format control

See SPrintf( <format control>, <params> ) for format control.

params

See SPrintf( <format control>, <params> ) for params.

Return Value

None.

Remarks

This is basically a wrapper for the SPrintf( <format control>, <params> ) function so it will do exactly what that function does but print the result instantly and return no string.

See SPrintf( <format control>, <params> ) for remarks.

Example

See SPrintf( <format control>, <params> ) for example.