Oct 27, 2020 Download Now: Basic Linux Commands Cheat Sheet Linux System Administration Skills Assessment The printf command traces its roots back to the development world but offers practical utility to the sysadmin, as well. Printf and scanf are the two standard C programming language functions for console input and output. A variation of these commands ( fprintf and fscanf ) also allows I/O to files. Another ( sprintf and sscanf ) allows I/O to strings.
Java’s printf() is a method that is used for formatting data output and is a combination of String.format() and out.print(). The types of formatting include:
- flags
- width
- precision
- conversions
General Equation: %[flag][width][.precision][conversion]
Flags: plus(+) or minus(-) sign, zero-padding, comma delimiter, and left justify.
Width: minimum amount of spaces data takes up.
Precision: amount of digits after decimal (only applies to floating points).
Conversion: decimal integer(d), floating point(f), char(c), String(s), boolean(b), and hashcode(h).
Decimal Integer – byte, short, int, long
Floating Point – float, double
Cheat Sheet Recipes
[Example][Example]
[Resource][Resource]
[Resource][Resource]
C Language Cheat Sheet
General | |
|---|---|
%c | character |
%C | converts to uppercase character (if not already) |
%d | decimal integer (base 10) |
%e | scientific notation |
%E | scientific notation with a capital ‘E’ |
%f | floating-point number |
%i | integer (base 10) |
%b | converts to boolean |
%B | converts to uppercase boolean |
%o | octal number (base 8) |
%s | a string of characters |
%S | converts to a string of uppercase characters (if not already) |
%u | unsigned decimal integer |
%h | converts to hashcode |
%H | converts to uppercase hashcode |
%x | number in hexadecimal (base 16) |
%% | prints a percent sign |
% | prints a percent sign |
Decimal Integer | |
%0Xd | zero-fill for X digits |
%Xd | right justify for X digits |
%-Xd | left justify for X digits |
%+d | adds plus sign(+) to positive integers, minus sign for negative integers(-) |
% d | prints minus sign(-) if integer is negative, prints a space elsewise |
%,d | uses comma delimiter between every 3 digits (ex: 1,000) |
Floating Point | |
%.Yf | prints Y positions after decimal |
%Xf | takes up X spaces |
%0X.Yf | zero-fills |
%-X.Yf | left justifies |
String | |
%Xs | formats string for a minimum of X spaces |
%-Xs | left justify |
Special Characters | |
a | audible alert |
b | backspace |
f | form feed |
n | newline or linefeed |
r | carriage return |
t | tab |
v | vertical tab |
| backslash |
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