Several varieties of expressions are known as constant expressions. Preprocessor constant expression The

Queries the alignment requirement of its operand type. Syntax

Arithmetic operators apply standard mathematical operations to their operands. Operator

Executes a statement repeatedly until the value of condition becomes false. The test takes place after each iteration

Pointer is a type of an object that refers to a function or an object of another type, possibly adding qualifiers. Pointer may also refer to nothing, which is indicated by

If the declarator or type specifier that declares the identifier appears outside of any block or list of parameters, the identifier has file scope, which terminates at the

The typedef declaration provides a way to declare an identifier as a type alias, to be used to replace a possibly complex type name. The

An object whose identifier is declared without the storage-class specifier _Thread_local, and either with external or internal linkage or with the storage-class

An enumerated type is a distinct type whose value is restricted to one of

Comments serve as a sort of in-code documentation. When inserted into a program, they are effectively ignored by the compiler; they are solely intended to be used as notes