Editing Printf (section)

===Type field===

The type field can be any of:

{{Table alignment}}
{| class="wikitable col1center"
|-
! Text
! Description
|-
| {{tt|%}}
|Output a literal {{tt|%}} character; does not accept flags, width, precision or length fields
|-
| {{tt|d}}, {{tt|i}}
|(signed) {{tt|int}} formatted as decimal; {{tt|%d}} and {{tt|%i}} are synonymous except when used with <code>scanf</code>
|-
| {{tt|u}}
| {{tt|unsigned int}} formatted as decimal.
|-
| {{tt|f}}, {{tt|F}}
|{{tt|double}} formatted as [[Fixed-point arithmetic|fixed-point]]; {{tt|f}} and {{tt|F}} only differs in how the strings for an infinite number or [[NaN]] are printed ({{tt|inf}}, {{tt|infinity}} and {{tt|nan}} for {{tt|f}}; {{tt|INF}}, {{tt|INFINITY}} and {{tt|NAN}} for {{tt|F}})
|-
| {{tt|e}}, {{tt|E}}
|{{tt|double}} formatted as in exponential notation {{tt|''d''.''ddd''e±''dd''}}; {{tt|E}} results in {{tt|E}} rather than {{tt|e}} to introduce the exponent; the exponent always contains at least two digits; if the value is zero, the exponent is {{tt|00}}; in Windows, the exponent contains three digits by default, e.g. {{tt|1.5e002}}, but this can be altered by Microsoft-specific {{code|_set_output_format}} function
|-
| {{tt|g}}, {{tt|G}}
|{{tt|double}} formatted as either fixed-point or exponential notation, whichever is more appropriate for its magnitude; {{tt|g}} uses lower-case letters, {{tt|G}} uses upper-case letters; this type differs slightly from fixed-point notation in that insignificant zeroes to the right of the decimal point are not included, and that the precision field specifies the total number of significant digits rather than the digits after the decimal; the decimal point is not included on whole numbers
|-
| {{tt|x}}, {{tt|X}}
|{{tt|unsigned int}} formatted as [[hexadecimal]]; {{tt|x}} uses lower-case letters and {{tt|X}} uses upper-case
|-
| {{tt|o}}
|{{tt|unsigned int}} formatted as [[octal]]
|-
| {{tt|s}}
|null-terminated string
|-
| {{tt|c}}
|{{tt|char}}
|-
| {{tt|p}}
|[[Pointer (computer science)|Pointer]] formatted in an implementation-defined way
|-
| {{tt|a}}, {{tt|A}}
|{{tt|double}} in hexadecimal notation, starting with {{tt|0x}} or {{tt|0X}}. {{tt|a}} uses lower-case letters, {{tt|A}} uses upper-case letters<ref>{{cite web| url= https://www.gnu.org/software/libc/manual/html_node/Table-of-Output-Conversions.html | work= The GNU C Library Reference Manual | at= sec. 12.12.3 | title= Table of Output Conversions | author= Free Software Foundation | author-link= Free Software Foundation | publisher= self-published | access-date=2014-03-17 }}</ref><ref>
[http://www.cplusplus.com/reference/cstdio/printf/ "printf"]
({{tt|%a}} added in C99)
</ref>
|-
| {{tt|n}}
| Outputs nothing but writes the number of characters written so far into an integer [[Pointer (computer science)|pointer]] parameter; in [[Java (programming language)|Java]] this prints a [[newline]]<ref>{{cite web|url=https://docs.oracle.com/javase/tutorial/java/data/numberformat.html|title=Formatting Numeric Print Output |website=The Java Tutorials | publisher=Oracle Inc.|access-date=19 March 2018}}</ref>
|}