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

Member access operators allow access to the members of their operands. Operator

Arithmetic operators apply standard mathematical operations to their operands. Operator

Defined in header <wchar.h>

Defined in header <stdlib.h>

Defined in header <math.h>

Defined in header <math.h>

Defined in header <stdarg.h>

Usage return statement:

Defined in header <time.h>