C's 32 keywords Auto: Declares that automatic variables are generally not used
Double: declaring a dual-precision variable or function
int: Declaring an integer variable or function
struct: Declares struct-body variable or function
Break: Jump out of the current loop
ELSE: Conditional statement Negation branch (with IF)
Long: Declares a variable or function of length integer
SWITCH: For switching statements
Case: Switch Statement Branch
Enum: declaring enum type
Register: declaring register variable
typedef: Used to alias data types (and of course other functions)
Char: Declaring a character-type variable or function
extern: Declaring a variable is being declared in another file (and can also be considered a reference variable)
Return: Subroutine return statement (can take parameters, also see without parameters)
Union: declaring Union data types
Const: Declaring read-only variables
float: Declaring a floating-point variable or function
Short: Declaring a variable or function with a shorter integer
Unsigned: Declaring an unsigned type variable or function
Continue: End the current loop and start the next cycle
For: A looping statement (can be sensed inexpressible)
Signed: Declaring a signed type variable or function
void: Declares a function with no return value or no argument, declares an untyped pointer (basically three effects)
Default: "Other" branch in a switch statement
Goto: Unconditional Jump Statement
sizeof: Calculating data type length
Volatile: Explanatory variables can be implicitly changed in program execution
Do: loop body of a looping statement
While: loop condition of a looping statement
Static: Declaring a static variable
if: Conditional statement
C Language 9 Control Statements ①if () ~else conditional Statement ②for () ~ Loop statement ③while () ~ Loop statement ④do~while () Loop statement ⑤continue end this loop statement ⑥bre AK Abort Execute switch or LOOP statement ⑦switch Multi-Branch SELECT statement ⑧goto turn statement ⑨return return statement from function
32 keywords and 9 control statements for C language
