C printf () function conversion specifier

Source: Internet
Author: User

1. Conversion specifier

Conversion instructions                                                   Output                                                                 
%a Floating-point numbers, hexadecimal numbers, and p-counting methods
%A Floating-point numbers, hexadecimal numbers, and p-counting methods
%c A character
%d Signed Decimal
%e Floating-point number, E-counting method
%E Floating-point number, E-counting method
%f Floating-point, decimal-counting method
%g Automatically select the%f or%e.%e format when the exponent is less than-4 or greater than or equal to the precision based on the value
%G Automatically select the%f or%e.%e format when the exponent is less than-4 or greater than or equal to the precision based on the value
%i Signed decimal with D
%o Unsigned 8 binary
%p Pointer
%s String
%u unsigned decimal
%x Use a hexadecimal 0f unsigned integer
%x Use a hexadecimal 0F unsigned integer
%% Print a percent semicolon

2. Conversion Descriptor Modifiers

Modifier Significance
Sign Five flags:-, +, space, #和0
Digit (s) Field width Minimum value e.%4d
. Digit (s) Precision. Corresponds to%e,%e, and%f conversions, which are the digits of the number that will be printed to the right of the decimal point.
H Used with integer conversions to represent an integer type of short
hh Used with integer conversion specifiers to represent a singed char or unsigned char
L Used with integer conversions to represent an integer type of long
L Used with floating-point type conversions to indicate a float type of type long
T Used in conjunction with integer conversions to represent a ptrdiff_t
Z Used with integer conversions to represent a size_t (sizeof return type) E.%ZD

3. Logo

/tr>
Span style= "FONT-SIZE:14PX;" > - Project left-aligned E. "%-20s"
+ displays the sign of the value E. "+6.2f"
(space) span> signed with a leading space; if negative, displays a minus sign
Span style= "FONT-SIZE:14PX;" > # E.% #o
0 For all number formats, the field width is filled with leading zeros instead of spaces, or if the specified precision is omitted.

C printf () function conversion specifier

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