Comments
ASCII chart
Character sets and encodings
Translation phases
Punctuation
Identifier - Scope - Lifetime
Lookup and Name Spaces
Type - Arithmetic types
Objects and Alignment
Themain function
As-if rule
Undefined behavior
Memory model and Data races

#if -#ifdef -#ifndef -#elif
#elifdef -#elifndef(C23)
#define -# -##
#include -#pragma
#line -#error
#warning(C23) -#embed(C23)

if -switch
for
while -do-while
continue -break
goto -return

Value categories
Evaluation order and sequencing
Constants and literals
 Integer constants
 Floating constants
 Character constants
 true/false(C23)
 nullptr(C23)
 String literals
 Compound literals(C99)
Constant expressions
Implicit conversions
Operators
  Member access and indirection
  Logical - Comparison
  Arithmetic - Assignment
  Increment and Decrement
  Call, Comma, Ternary
 sizeof -alignof(C11)
  Cast operators
Operator precedence
Generic selection(C11)

Scalar
Array
Structure/Union

Pointers - Arrays
Enumerations
Storage duration and Linkage
const -volatile -restrict(C99)
struct -union - Bit-fields
alignas(C11) -typedef
static_assert(C11)
Atomic types(C11)
External and tentative definitions
Attributes(C23)

Function declaration
Function definition
inline(C99)
_Noreturn(C11)(deprecated in C23)
Variadic arguments

History of C
Conformance
Inline assembly
Signal handling
Analyzability(C11)