C Programming

Basic Format Specifiers

%d = an integer whole number = 100
%f = a floating point number = 0.123456
%c = a single character = 'A'
%s = a string of characters = "Hello World"
%p = a machine memory address = 0x0022FF5C
%u = a unsigned int
%lu = a long unsigned int
%llu = a long long unsigned int

Keywords

auto	extern	sizeof
break	float	static
case	for	struct
char	goto	switch
const	if	typedef
continue	int	union
default	long	unsigned
do	register	void
double	return	volatile
else	short	while
enum	signed

Escape Sequences

\n	newline	\\	backslash
\t	horizontal tab	\?	question mark
\v	vertical tab	\'	single quote
\b	backspace	\"	double quote
\r	carriage return	\000	octal number
\f	form feed	\xhh	hexadecimal number
\a	audible alert	\0	null character