32 keywords in C language and 32 keywords in C Language
Auto: declare automatic variable short: declare short integer variable or function int: declare integer variable or function long: declare long integer variable or function float: declare floating point variable or function double: declare a double-precision variable or function char: declare a struct variable or function struct: declare a struct variable or function union: declare a shared data type enum: declare an enumeration type typedef: Used to get an alias for the Data Type const: declare the read-only variable unsigned: declare the unsigned type variable or function signed: declare the signed type variable or function extern: declare the variable is declared in other files register: declare the register variable static: declared static variable volatile: indicates that the variable can be implicitly changed in program execution void: declares that the function has no return value or no parameter, and declares that there is no type pointer if: Condition Statement else: conditional statement negative Branch (used with if) switch: used to switch statement case: switch statement branch for: a loop statement do: the loop body of the loop statement while: loop statement's loop condition goto: unconditional jump statement continue: ends the current loop, starts the next cycle break: jumps out of the current loop default: the "other" branch sizeof: calculate the length of the data type. return: the loop condition of the subprogram return Statement (which can contain parameters or parameters ).