The "Missing:"s below indicate that an entry is incomplete.
{ ... } (9) | block (grouping statements, especially when statements are not expressions) |
nothing needed | breaking lines (useful when end-of-line and/or indentation has a special meaning) |
#if 0 ... #endif | commenting (nestable) |
/* ... */ | commenting (non nestable) |
< > <= >= | comparison |
/** ... */ (1) | documentation comment (non nestable) |
== != | equality / inequality (shallow) |
( ... ) | grouping expressions |
__LINE__ __FILE__ | information about the current line and file |
case-sensitive | tokens (case-sensitivity (keywords, variable identifiers...)) |
usually lowercase or underscores, ALL_CAPS for macros | tokens (if case sensitive, what is the standard way for scrunching together multiple words) |
[_a-zA-Z][_a-zA-Z0-9]* | tokens (variable identifier regexp) |
= | variable assignment or declaration (assignment) |
f(a,b,...) | function call |
f() | function call (with no parameter) |
typ0 f(typ1 para1, typ2 para2, ...) { ... } | function definition |
void f(typ1 para1, typ2 para2, ...) { ... } | function definition (procedures) |
return | function return value (breaks the control flow) |
continue / break | breaking control flow (continue / break) |
goto | breaking control flow (goto (unconditional jump)) |
return | breaking control flow (returning a value) |
if (c) b | if_then |
if (c) b1 else b2 | if_then_else |
c ? b1 : b2 | if_then_else |
do {expr} while (!cond) | loop (do something until condition) |
for | loop (for "a la C" (while + initialisation)) |
for (int i = 10; i >= 1; i--) expr | loop (for each value in a numeric range, 1 decrement) |
for (int i = 1; i <= 10; i++) expr | loop (for each value in a numeric range, 1 increment (see also the entries about ranges)) |
for (int i = 1; i <= 10; i += 2) expr | loop (for each value in a numeric range, free increment) |
while (cond) expr | loop (while condition do something) |
switch (val) { case v1: expr1; break; case v2: case v3: expr23; break; default: expr_else; } | multiple selection (switch) |
, | sequence |
; | sequence |
t v | annotation (or variable declaration) |
(t) e | cast (upcast) |
typedef t n | declaration |
it is the default | mutability, constness (type of a mutable value) |
s[n] | accessing n-th character |
(char) c | ascii to character |
'z' | character "z" |
(int) c | character to ascii |
char | character type name |
strndup(s + n, len) | extract a substring |
strstr / strchr / index | locate a substring |
/ strrchr / rindex | locate a substring (starting at the end) |
"...\n" "...\n" | multi-line |
puts | simple print (on strings) |
printf | simple print (printf-like) |
sprintf | sprintf-like |
strcat | string concatenation |
strcmp | string equality & inequality |
strlen | string size |
"\n" | strings (end-of-line (without writing the real CR or LF character)) |
"..." | strings (verbatim) |
char[] | type name |
toupper / tolower | upper / lower case character |
Missing:
strings (with interpolation)
serialize (marshaling)
unserialize (un-marshaling)
NULL / 0 / '\0' | false value |
! | logical not |
|| / && | logical or / and (short circuit) |
anything not false | true value |
{ a, b, c } (67) | list constructor |
a[i] | list/array indexing |
NULL | optional value (null value) |
v | optional value (value) |
. | record selector |
-> | record selector |
& | reference (pointer) (creation) |
* (78) | reference (pointer) (dereference) |
-> (80) | reference (pointer) (dereference) |
+ / - / * / / | addition / subtraction / multiplication / division |
& / | / ^ | bitwise operators (and / or / xor) |
<< / >> | bitwise operators (left shift / right shift / unsigned right shift) |
~ | bitwise operators (negation) |
div ldiv lldiv | euclidian division (both quotient and modulo) |
pow | exponentiation (power) |
log / log10 | logarithm |
% | modulo (modulo of -3 / 2 is -1) |
- | negation |
1000., 1E3 | numbers syntax (decimals) |
07, 0xf | numbers syntax (integers in base 2, octal and hexadecimal) |
1000 | numbers syntax (integers) |
mathematical | operator priorities and associativities (addition vs multiplication) |
sqrt / exp / abs | square root / e-exponential / absolute value |
sin / cos / tan | trigonometry (basic) |
asin / acos / atan (88) | trigonometry (inverse) |
trunc / round / floor / ceil | truncate / round / floor / ceil |
float, double | type name (decimal) |
short, int, long | type name (integers) |
Missing:
random (random number)
random (seed the pseudo random generator)